15855249340 has 48 divisors (see below), whose sum is σ = 38065595904. Its totient is φ = 5434228800.

The previous prime is 15855249329. The next prime is 15855249439. The reversal of 15855249340 is 4394255851.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 428995 + ... + 464485.

It is an arithmetic number, because the mean of its divisors is an integer number (793033248).

Almost surely, 2^15855249340 is an apocalyptic number.

15855249340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15855249340 is an abundant number, since it is smaller than the sum of its proper divisors (22210346564).

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

15855249340 is a wasteful number, since it uses less digits than its factorization.

15855249340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38698 (or 38696 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 46.

The spelling of 15855249340 in words is "fifteen billion, eight hundred fifty-five million, two hundred forty-nine thousand, three hundred forty".