15421548680 has 16 divisors (see below), whose sum is σ = 34698484620. Its totient is φ = 6168619456.

The previous prime is 15421548677. The next prime is 15421548733. The reversal of 15421548680 is 8684512451.

It can be written as a sum of positive squares in 2 ways, for example, as 14996941444 + 424607236 = 122462^2 + 20606^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192769319 + ... + 192769398.

Almost surely, 2^15421548680 is an apocalyptic number.

15421548680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15421548680 is an abundant number, since it is smaller than the sum of its proper divisors (19276935940).

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

15421548680 is a wasteful number, since it uses less digits than its factorization.

15421548680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385538728 (or 385538724 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 44.

The spelling of 15421548680 in words is "fifteen billion, four hundred twenty-one million, five hundred forty-eight thousand, six hundred eighty".