51650555607 has 16 divisors (see below), whose sum is σ = 87450676480. Its totient is φ = 29514603096.

The previous prime is 51650555603. The next prime is 51650555639. The reversal of 51650555607 is 70655505615.

It is not a de Polignac number, because 51650555607 - 2² = 51650555603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51650555603) 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, 136641493 + ... + 136641870.

It is an arithmetic number, because the mean of its divisors is an integer number (5465667280).

Almost surely, 2^51650555607 is an apocalyptic number.

51650555607 is a deficient number, since it is larger than the sum of its proper divisors (35800120873).

51650555607 is a wasteful number, since it uses less digits than its factorization.

51650555607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273283379 (or 273283373 counting only the distinct ones).

The product of its (nonzero) digits is 787500, while the sum is 45.

The spelling of 51650555607 in words is "fifty-one billion, six hundred fifty million, five hundred fifty-five thousand, six hundred seven".