5156862640 has 20 divisors (see below), whose sum is σ = 11989705824. Its totient is φ = 2062745024.

The previous prime is 5156862629. The next prime is 5156862643. The reversal of 5156862640 is 462686515.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (5156862643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32230312 + ... + 32230471.

Almost surely, 2^5156862640 is an apocalyptic number.

It is an amenable number.

5156862640 is an abundant number, since it is smaller than the sum of its proper divisors (6832843184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5156862640 is a wasteful number, since it uses less digits than its factorization.

5156862640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64460796 (or 64460790 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The square root of 5156862640 is about 71811.2988324261. The cubic root of 5156862640 is about 1727.6742266386.

The spelling of 5156862640 in words is "five billion, one hundred fifty-six million, eight hundred sixty-two thousand, six hundred forty".