641219207954 has 32 divisors (see below), whose sum is σ = 1137738026880. Its totient is φ = 268181096832.

The previous prime is 641219207939. The next prime is 641219207983. The reversal of 641219207954 is 459702912146.

It is a super-2 number, since 2×641219207954² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28206347 + ... + 28229070.

It is an arithmetic number, because the mean of its divisors is an integer number (35554313340).

Almost surely, 2^641219207954 is an apocalyptic number.

641219207954 is a deficient number, since it is larger than the sum of its proper divisors (496518818926).

641219207954 is a wasteful number, since it uses less digits than its factorization.

641219207954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56435474.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 641219207954 in words is "six hundred forty-one billion, two hundred nineteen million, two hundred seven thousand, nine hundred fifty-four".