15011231530 has 16 divisors (see below), whose sum is σ = 27021663360. Its totient is φ = 6004171152.

The previous prime is 15011231507. The next prime is 15011231549. The reversal of 15011231530 is 3513211051.

It is a super-2 number, since 2×15011231530² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269851 + ... + 320689.

It is an arithmetic number, because the mean of its divisors is an integer number (1688853960).

Almost surely, 2^15011231530 is an apocalyptic number.

15011231530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15011231530 is a deficient number, since it is larger than the sum of its proper divisors (12010431830).

15011231530 is a wasteful number, since it uses less digits than its factorization.

15011231530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80373.

The product of its (nonzero) digits is 450, while the sum is 22.

Adding to 15011231530 its reverse (3513211051), we get a palindrome (18524442581).

The spelling of 15011231530 in words is "fifteen billion, eleven million, two hundred thirty-one thousand, five hundred thirty".