13640531700 has 36 divisors (see below), whose sum is σ = 39466605920. Its totient is φ = 3637475040.

The previous prime is 13640531687. The next prime is 13640531717. The reversal of 13640531700 is 713504631.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22733920 + ... + 22734519.

Almost surely, 2^13640531700 is an apocalyptic number.

13640531700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13640531700 is an abundant number, since it is smaller than the sum of its proper divisors (25826074220).

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

13640531700 is a wasteful number, since it uses less digits than its factorization.

13640531700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45468456 (or 45468449 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The spelling of 13640531700 in words is "thirteen billion, six hundred forty million, five hundred thirty-one thousand, seven hundred".