51551515354615 has 8 divisors (see below), whose sum is σ = 62474311677888. Its totient is φ = 40832883448800.

The previous prime is 51551515354571. The next prime is 51551515354631. The reversal of 51551515354615 is 51645351515515.

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

It is not a de Polignac number, because 51551515354615 - 2⁹ = 51551515354103 is a prime.

It is a super-2 number, since 2×51551515354615² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51041103807 + ... + 51041104816.

It is an arithmetic number, because the mean of its divisors is an integer number (7809288959736).

Almost surely, 2^{51551515354615} is an apocalyptic number.

51551515354615 is a deficient number, since it is larger than the sum of its proper divisors (10922796323273).

51551515354615 is a wasteful number, since it uses less digits than its factorization.

51551515354615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102082208729.

The product of its digits is 5625000, while the sum is 52.

The spelling of 51551515354615 in words is "fifty-one trillion, five hundred fifty-one billion, five hundred fifteen million, three hundred fifty-four thousand, six hundred fifteen".