641653688034 has 24 divisors (see below), whose sum is σ = 1390279388160. Its totient is φ = 213879988728.

The previous prime is 641653688029. The next prime is 641653688087. The reversal of 641653688034 is 430886356146.

641653688034 is a `hidden beast` number, since 64 + 16 + 536 + 8 + 8 + 0 + 34 = 666.

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, 544707 + ... + 1256985.

It is an arithmetic number, because the mean of its divisors is an integer number (57928307840).

Almost surely, 2^641653688034 is an apocalyptic number.

641653688034 is an abundant number, since it is smaller than the sum of its proper divisors (748625700126).

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

641653688034 is a wasteful number, since it uses less digits than its factorization.

641653688034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762334 (or 762331 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 54.

The spelling of 641653688034 in words is "six hundred forty-one billion, six hundred fifty-three million, six hundred eighty-eight thousand, thirty-four".