15213011586861 has 16 divisors (see below), whose sum is σ = 22133020008960. Its totient is φ = 9217922374320.

The previous prime is 15213011586779. The next prime is 15213011586863. The reversal of 15213011586861 is 16868511031251.

It is a de Polignac number, because none of the positive numbers 2^k-15213011586861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15213011586861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15213011586863) 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, 51968031 + ... + 52259948.

It is an arithmetic number, because the mean of its divisors is an integer number (1383313750560).

Almost surely, 2^{15213011586861} is an apocalyptic number.

15213011586861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15213011586861 is a deficient number, since it is larger than the sum of its proper divisors (6920008422099).

15213011586861 is a wasteful number, since it uses less digits than its factorization.

15213011586861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104232416.

The product of its (nonzero) digits is 345600, while the sum is 48.

The spelling of 15213011586861 in words is "fifteen trillion, two hundred thirteen billion, eleven million, five hundred eighty-six thousand, eight hundred sixty-one".