51862613007 has 4 divisors (see below), whose sum is σ = 69150150680. Its totient is φ = 34575075336.

The previous prime is 51862612987. The next prime is 51862613063. The reversal of 51862613007 is 70031626815.

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

It is not a de Polignac number, because 51862613007 - 2¹² = 51862608911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51862612007) 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, 8643768832 + ... + 8643768837.

It is an arithmetic number, because the mean of its divisors is an integer number (17287537670).

Almost surely, 2^51862613007 is an apocalyptic number.

51862613007 is a deficient number, since it is larger than the sum of its proper divisors (17287537673).

51862613007 is a wasteful number, since it uses less digits than its factorization.

51862613007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17287537672.

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 51862613007 in words is "fifty-one billion, eight hundred sixty-two million, six hundred thirteen thousand, seven".