51102657071 has 4 divisors (see below), whose sum is σ = 51108609912. Its totient is φ = 51096704232.

The previous prime is 51102657061. The next prime is 51102657077. The reversal of 51102657071 is 17075620115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17075620115 = 5 ⋅3415124023.

It is a cyclic number.

It is not a de Polignac number, because 51102657071 - 2⁶ = 51102657007 is a prime.

It is a super-2 number, since 2×51102657071² (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 (51102657077) 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, 2963525 + ... + 2980718.

It is an arithmetic number, because the mean of its divisors is an integer number (12777152478).

Almost surely, 2^51102657071 is an apocalyptic number.

51102657071 is a deficient number, since it is larger than the sum of its proper divisors (5952841).

51102657071 is an equidigital number, since it uses as much as digits as its factorization.

51102657071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5952840.

The product of its (nonzero) digits is 14700, while the sum is 35.

The spelling of 51102657071 in words is "fifty-one billion, one hundred two million, six hundred fifty-seven thousand, seventy-one".