51941692562 has 4 divisors (see below), whose sum is σ = 77912538846. Its totient is φ = 25970846280.

The previous prime is 51941692507. The next prime is 51941692597. The reversal of 51941692562 is 26529614915.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 50759639401 + 1182053161 = 225299^2 + 34381^2 .

It is a super-2 number, since 2×51941692562² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51941692562.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12985423139 + ... + 12985423142.

Almost surely, 2^51941692562 is an apocalyptic number.

51941692562 is a deficient number, since it is larger than the sum of its proper divisors (25970846284).

51941692562 is a wasteful number, since it uses less digits than its factorization.

51941692562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25970846283.

The product of its digits is 1166400, while the sum is 50.

The spelling of 51941692562 in words is "fifty-one billion, nine hundred forty-one million, six hundred ninety-two thousand, five hundred sixty-two".