15451052640 has 96 divisors (see below), whose sum is σ = 48697770240. Its totient is φ = 4117999104.

The previous prime is 15451052623. The next prime is 15451052641. The reversal of 15451052640 is 4625015451.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15451052641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 970827 + ... + 986613.

It is an arithmetic number, because the mean of its divisors is an integer number (507268440).

Almost surely, 2^15451052640 is an apocalyptic number.

15451052640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15451052640 is an abundant number, since it is smaller than the sum of its proper divisors (33246717600).

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

15451052640 is a wasteful number, since it uses less digits than its factorization.

15451052640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17844 (or 17836 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The spelling of 15451052640 in words is "fifteen billion, four hundred fifty-one million, fifty-two thousand, six hundred forty".