643001000136 has 64 divisors (see below), whose sum is σ = 1771001928000. Its totient is φ = 192919584000.

The previous prime is 643001000123. The next prime is 643001000203. The reversal of 643001000136 is 631000100346.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 12030811 + ... + 12084138.

It is an arithmetic number, because the mean of its divisors is an integer number (27671905125).

Almost surely, 2^643001000136 is an apocalyptic number.

643001000136 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

643001000136 is an abundant number, since it is smaller than the sum of its proper divisors (1128000927864).

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

643001000136 is a wasteful number, since it uses less digits than its factorization.

643001000136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24115070 (or 24115066 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The spelling of 643001000136 in words is "six hundred forty-three billion, one million, one hundred thirty-six", and thus it is an aban number.