641961548202 has 32 divisors (see below), whose sum is σ = 1388724382080. Its totient is φ = 196664063040.

The previous prime is 641961548197. The next prime is 641961548243. The reversal of 641961548202 is 202845169146.

It is a super-2 number, since 2×641961548202² (a number of 24 digits) contains 22 as substring.

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, 17952174 + ... + 17987897.

It is an arithmetic number, because the mean of its divisors is an integer number (43397636940).

Almost surely, 2^641961548202 is an apocalyptic number.

641961548202 is an abundant number, since it is smaller than the sum of its proper divisors (746762833878).

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

641961548202 is a wasteful number, since it uses less digits than its factorization.

641961548202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35940318.

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 641961548202 in words is "six hundred forty-one billion, nine hundred sixty-one million, five hundred forty-eight thousand, two hundred two".