51623560326826 has 4 divisors (see below), whose sum is σ = 77435340490242. Its totient is φ = 25811780163412.

The previous prime is 51623560326823. The next prime is 51623560326851. The reversal of 51623560326826 is 62862306532615.

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., 50619454120225 + 1004106206601 = 7114735^2 + 1002051^2 .

It is not an unprimeable number, because it can be changed into a prime (51623560326823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12905890081705 + ... + 12905890081708.

Almost surely, 2^{51623560326826} is an apocalyptic number.

51623560326826 is a deficient number, since it is larger than the sum of its proper divisors (25811780163416).

51623560326826 is a wasteful number, since it uses less digits than its factorization.

51623560326826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25811780163415.

The product of its (nonzero) digits is 18662400, while the sum is 55.

The spelling of 51623560326826 in words is "fifty-one trillion, six hundred twenty-three billion, five hundred sixty million, three hundred twenty-six thousand, eight hundred twenty-six".