15461161520 has 40 divisors (see below), whose sum is σ = 41082516384. Its totient is φ = 5300969472.

The previous prime is 15461161511. The next prime is 15461161543. The reversal of 15461161520 is 2516116451.

It is a tau number, because it is divible by the number of its divisors (40).

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, 13804049 + ... + 13805168.

Almost surely, 2^15461161520 is an apocalyptic number.

15461161520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15461161520 is an abundant number, since it is smaller than the sum of its proper divisors (25621354864).

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

15461161520 is a wasteful number, since it uses less digits than its factorization.

15461161520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27609237 (or 27609231 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

Adding to 15461161520 its reverse (2516116451), we get a palindrome (17977277971).

The spelling of 15461161520 in words is "fifteen billion, four hundred sixty-one million, one hundred sixty-one thousand, five hundred twenty".