51651156107 has 4 divisors (see below), whose sum is σ = 51651669480. Its totient is φ = 51650642736.

The previous prime is 51651156071. The next prime is 51651156127. The reversal of 51651156107 is 70165115615.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 51651156107 - 2¹² = 51651152011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51651156127) 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, 50633 + ... + 325370.

It is an arithmetic number, because the mean of its divisors is an integer number (12912917370).

Almost surely, 2^51651156107 is an apocalyptic number.

51651156107 is a deficient number, since it is larger than the sum of its proper divisors (513373).

51651156107 is a wasteful number, since it uses less digits than its factorization.

51651156107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513372.

The product of its (nonzero) digits is 31500, while the sum is 38.

The spelling of 51651156107 in words is "fifty-one billion, six hundred fifty-one million, one hundred fifty-six thousand, one hundred seven".