51620006165 has 32 divisors (see below), whose sum is σ = 76261409280. Its totient is φ = 32664063744.

The previous prime is 51620006147. The next prime is 51620006183. The reversal of 51620006165 is 56160002615.

It is an interprime number because it is at equal distance from previous prime (51620006147) and next prime (51620006183).

It is not a de Polignac number, because 51620006165 - 2⁶ = 51620006101 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1712696 + ... + 1742574.

It is an arithmetic number, because the mean of its divisors is an integer number (2383169040).

Almost surely, 2^51620006165 is an apocalyptic number.

It is an amenable number.

51620006165 is a deficient number, since it is larger than the sum of its proper divisors (24641403115).

51620006165 is a wasteful number, since it uses less digits than its factorization.

51620006165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33701.

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 51620006165 in words is "fifty-one billion, six hundred twenty million, six thousand, one hundred sixty-five".