51006506101616 has 40 divisors (see below), whose sum is σ = 106472306627904. Its totient is φ = 23531450745600.

The previous prime is 51006506101561. The next prime is 51006506101643. The reversal of 51006506101616 is 61610160560015.

It is a super-2 number, since 2×51006506101616² (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 51006506101616.

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, 51664031 + ... + 52642046.

Almost surely, 2^{51006506101616} is an apocalyptic number.

It is an amenable number.

51006506101616 is an abundant number, since it is smaller than the sum of its proper divisors (55465800526288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51006506101616 is a wasteful number, since it uses less digits than its factorization.

51006506101616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104308449 (or 104308443 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 51006506101616 in words is "fifty-one trillion, six billion, five hundred six million, one hundred one thousand, six hundred sixteen".