15131641506 has 16 divisors (see below), whose sum is σ = 30484184544. Its totient is φ = 5007063584.

The previous prime is 15131641501. The next prime is 15131641513. The reversal of 15131641506 is 60514613151.

It is a super-2 number, since 2×15131641506² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15131641501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9203340 + ... + 9204983.

It is an arithmetic number, because the mean of its divisors is an integer number (1905261534).

Almost surely, 2^15131641506 is an apocalyptic number.

15131641506 is an abundant number, since it is smaller than the sum of its proper divisors (15352543038).

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

15131641506 is a wasteful number, since it uses less digits than its factorization.

15131641506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18408465.

The product of its (nonzero) digits is 10800, while the sum is 33.

It can be divided in two parts, 1513164 and 1506, that added together give a triangular number (1514670 = T₁₇₄₀).

The spelling of 15131641506 in words is "fifteen billion, one hundred thirty-one million, six hundred forty-one thousand, five hundred six".