51110656511015 has 16 divisors (see below), whose sum is σ = 61511234591520. Its totient is φ = 40769567187840.

The previous prime is 51110656511011. The next prime is 51110656511039. The reversal of 51110656511015 is 51011565601115.

It is not a de Polignac number, because 51110656511015 - 2² = 51110656511011 is a prime.

It is a super-2 number, since 2×51110656511015² (a number of 28 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 51110656511015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51110656511011) 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, 65662805 + ... + 66436625.

It is an arithmetic number, because the mean of its divisors is an integer number (3844452161970).

Almost surely, 2^{51110656511015} is an apocalyptic number.

51110656511015 is a deficient number, since it is larger than the sum of its proper divisors (10400578080505).

51110656511015 is a wasteful number, since it uses less digits than its factorization.

51110656511015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812242.

The product of its (nonzero) digits is 22500, while the sum is 38.

The spelling of 51110656511015 in words is "fifty-one trillion, one hundred ten billion, six hundred fifty-six million, five hundred eleven thousand, fifteen".