7643387052172 has 12 divisors (see below), whose sum is σ = 13375946697736. Its totient is φ = 3821687995680.

The previous prime is 7643387052167. The next prime is 7643387052179. The reversal of 7643387052172 is 2712507833467.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (7643387052179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4716568 + ... + 6126400.

Almost surely, 2^{7643387052172} is an apocalyptic number.

It is an amenable number.

7643387052172 is a deficient number, since it is larger than the sum of its proper divisors (5732559645564).

7643387052172 is a wasteful number, since it uses less digits than its factorization.

7643387052172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765208 (or 2765206 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 55.

The spelling of 7643387052172 in words is "seven trillion, six hundred forty-three billion, three hundred eighty-seven million, fifty-two thousand, one hundred seventy-two".