641541126402 has 48 divisors (see below), whose sum is σ = 1516427958240. Its totient is φ = 194398963200.

The previous prime is 641541126349. The next prime is 641541126439. The reversal of 641541126402 is 204621145146.

641541126402 is a `hidden beast` number, since 6 + 4 + 1 + 5 + 4 + 1 + 1 + 2 + 640 + 2 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7370049 + ... + 7456587.

It is an arithmetic number, because the mean of its divisors is an integer number (31592249130).

Almost surely, 2^641541126402 is an apocalyptic number.

641541126402 is an abundant number, since it is smaller than the sum of its proper divisors (874886831838).

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

641541126402 is a wasteful number, since it uses less digits than its factorization.

641541126402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123999 (or 123996 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 641541126402 in words is "six hundred forty-one billion, five hundred forty-one million, one hundred twenty-six thousand, four hundred two".