51157601623 has 16 divisors (see below), whose sum is σ = 52602286464. Its totient is φ = 49728487680.

The previous prime is 51157601617. The next prime is 51157601653. The reversal of 51157601623 is 32610675115.

It is a cyclic number.

It is not a de Polignac number, because 51157601623 - 2⁵ = 51157601591 is a prime.

It is a super-6 number, since 6×51157601623⁶ (a number of 66 digits) contains 666666 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51157601653) 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, 7457211 + ... + 7464067.

It is an arithmetic number, because the mean of its divisors is an integer number (3287642904).

Almost surely, 2^51157601623 is an apocalyptic number.

51157601623 is a deficient number, since it is larger than the sum of its proper divisors (1444684841).

51157601623 is a wasteful number, since it uses less digits than its factorization.

51157601623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7962.

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 51157601623 in words is "fifty-one billion, one hundred fifty-seven million, six hundred one thousand, six hundred twenty-three".