15451016640 has 112 divisors (see below), whose sum is σ = 49186234368. Its totient is φ = 4109415424.

The previous prime is 15451016639. The next prime is 15451016671. The reversal of 15451016640 is 4661015451.

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, 346669 + ... + 388691.

Almost surely, 2^15451016640 is an apocalyptic number.

15451016640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15451016640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24593117184).

15451016640 is an abundant number, since it is smaller than the sum of its proper divisors (33735217728).

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

15451016640 is a wasteful number, since it uses less digits than its factorization.

15451016640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42426 (or 42416 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 15451016640 in words is "fifteen billion, four hundred fifty-one million, sixteen thousand, six hundred forty".