2775361641 has 16 divisors (see below), whose sum is σ = 3987787776. Its totient is φ = 1706777856.

The previous prime is 2775361637. The next prime is 2775361643. The reversal of 2775361641 is 1461635772.

It is a happy number.

It is not a de Polignac number, because 2775361641 - 2² = 2775361637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2775361593 and 2775361602.

It is not an unprimeable number, because it can be changed into a prime (2775361643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37656 + ... + 83478.

It is an arithmetic number, because the mean of its divisors is an integer number (249236736).

Almost surely, 2^2775361641 is an apocalyptic number.

It is an amenable number.

2775361641 is a deficient number, since it is larger than the sum of its proper divisors (1212426135).

2775361641 is a wasteful number, since it uses less digits than its factorization.

2775361641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47392.

The product of its digits is 211680, while the sum is 42.

The square root of 2775361641 is about 52681.7011969052. The cubic root of 2775361641 is about 1405.3134208734.

The spelling of 2775361641 in words is "two billion, seven hundred seventy-five million, three hundred sixty-one thousand, six hundred forty-one".