51623626151 has 4 divisors (see below), whose sum is σ = 51769869072. Its totient is φ = 51477383232.

The previous prime is 51623626139. The next prime is 51623626157. The reversal of 51623626151 is 15162632615.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51623626151 - 2²² = 51619431847 is a prime.

It is a super-2 number, since 2×51623626151² (a number of 22 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 (51623626157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73120931 + ... + 73121636.

It is an arithmetic number, because the mean of its divisors is an integer number (12942467268).

Almost surely, 2^51623626151 is an apocalyptic number.

51623626151 is a deficient number, since it is larger than the sum of its proper divisors (146242921).

51623626151 is a wasteful number, since it uses less digits than its factorization.

51623626151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146242920.

The product of its digits is 64800, while the sum is 38.

The spelling of 51623626151 in words is "fifty-one billion, six hundred twenty-three million, six hundred twenty-six thousand, one hundred fifty-one".