51279046622 has 4 divisors (see below), whose sum is σ = 76918569936. Its totient is φ = 25639523310.

The previous prime is 51279046571. The next prime is 51279046657. The reversal of 51279046622 is 22664097215.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×51279046622² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12819761654 + ... + 12819761657.

It is an arithmetic number, because the mean of its divisors is an integer number (19229642484).

Almost surely, 2^51279046622 is an apocalyptic number.

51279046622 is a deficient number, since it is larger than the sum of its proper divisors (25639523314).

51279046622 is a wasteful number, since it uses less digits than its factorization.

51279046622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25639523313.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 51279046622 in words is "fifty-one billion, two hundred seventy-nine million, forty-six thousand, six hundred twenty-two".