13002047640 has 64 divisors (see below), whose sum is σ = 43340162400. Its totient is φ = 3467212416.

The previous prime is 13002047623. The next prime is 13002047687. The reversal of 13002047640 is 4674020031.

13002047640 is a `hidden beast` number, since 13 + 0 + 0 + 2 + 0 + 4 + 7 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 6018387 + ... + 6020546.

Almost surely, 2^13002047640 is an apocalyptic number.

13002047640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13002047640 is an abundant number, since it is smaller than the sum of its proper divisors (30338114760).

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

13002047640 is a wasteful number, since it uses less digits than its factorization.

13002047640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12038953 (or 12038943 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

Adding to 13002047640 its reverse (4674020031), we get a palindrome (17676067671).

The spelling of 13002047640 in words is "thirteen billion, two million, forty-seven thousand, six hundred forty".