51115240152551 has 8 divisors (see below), whose sum is σ = 55988295502320. Its totient is φ = 46449548860288.

The previous prime is 51115240152547. The next prime is 51115240152563. The reversal of 51115240152551 is 15525104251115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51115240152551 - 2² = 51115240152547 is a prime.

It is a super-2 number, since 2×51115240152551² (a number of 28 digits) contains 22 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 (51115240112551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51841013861 + ... + 51841014846.

It is an arithmetic number, because the mean of its divisors is an integer number (6998536937790).

Almost surely, 2^{51115240152551} is an apocalyptic number.

51115240152551 is a deficient number, since it is larger than the sum of its proper divisors (4873055349769).

51115240152551 is a wasteful number, since it uses less digits than its factorization.

51115240152551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103682028753.

The product of its (nonzero) digits is 50000, while the sum is 38.

The spelling of 51115240152551 in words is "fifty-one trillion, one hundred fifteen billion, two hundred forty million, one hundred fifty-two thousand, five hundred fifty-one".