51136621151 has 16 divisors (see below), whose sum is σ = 63761157888. Its totient is φ = 39842712000.

The previous prime is 51136621139. The next prime is 51136621157. The reversal of 51136621151 is 15112663115.

It is not a de Polignac number, because 51136621151 - 2⁶ = 51136621087 is a prime.

It is a super-2 number, since 2×51136621151² (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 (51136621157) 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, 909251 + ... + 963851.

It is an arithmetic number, because the mean of its divisors is an integer number (3985072368).

Almost surely, 2^51136621151 is an apocalyptic number.

51136621151 is a deficient number, since it is larger than the sum of its proper divisors (12624536737).

51136621151 is a wasteful number, since it uses less digits than its factorization.

51136621151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66782.

The product of its digits is 5400, while the sum is 32.

The spelling of 51136621151 in words is "fifty-one billion, one hundred thirty-six million, six hundred twenty-one thousand, one hundred fifty-one".