87834879251 has 16 divisors (see below), whose sum is σ = 106297629696. Its totient is φ = 70851693696.

The previous prime is 87834879247. The next prime is 87834879283. The reversal of 87834879251 is 15297843878.

It is not a de Polignac number, because 87834879251 - 2² = 87834879247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87834879221) 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, 1519460 + ... + 1576206.

It is an arithmetic number, because the mean of its divisors is an integer number (6643601856).

Almost surely, 2^87834879251 is an apocalyptic number.

87834879251 is a deficient number, since it is larger than the sum of its proper divisors (18462750445).

87834879251 is a wasteful number, since it uses less digits than its factorization.

87834879251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69778.

The product of its digits is 27095040, while the sum is 62.

The spelling of 87834879251 in words is "eighty-seven billion, eight hundred thirty-four million, eight hundred seventy-nine thousand, two hundred fifty-one".