13451504640 has 176 divisors, whose sum is σ = 49170446592. Its totient is φ = 3074605056.

The previous prime is 13451504617. The next prime is 13451504653. The reversal of 13451504640 is 4640515431.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

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, 44967 + ... + 170073.

Almost surely, 2^13451504640 is an apocalyptic number.

13451504640 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 13451504640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24585223296).

13451504640 is an abundant number, since it is smaller than the sum of its proper divisors (35718941952).

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

13451504640 is a wasteful number, since it uses less digits than its factorization.

13451504640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125142 (or 125124 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 13451504640 in words is "thirteen billion, four hundred fifty-one million, five hundred four thousand, six hundred forty".