641519620398 has 48 divisors (see below), whose sum is σ = 1404516998976. Its totient is φ = 211600926720.

The previous prime is 641519620367. The next prime is 641519620481. The reversal of 641519620398 is 893026915146.

641519620398 is a `hidden beast` number, since 6 + 4 + 1 + 5 + 1 + 9 + 620 + 3 + 9 + 8 = 666.

It is a congruent number.

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, 12127515 + ... + 12180297.

It is an arithmetic number, because the mean of its divisors is an integer number (29260770812).

Almost surely, 2^641519620398 is an apocalyptic number.

641519620398 is an abundant number, since it is smaller than the sum of its proper divisors (762997378578).

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

641519620398 is a wasteful number, since it uses less digits than its factorization.

641519620398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59849 (or 59846 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 641519620398 in words is "six hundred forty-one billion, five hundred nineteen million, six hundred twenty thousand, three hundred ninety-eight".