641192743618498 has 4 divisors (see below), whose sum is σ = 961789115427750. Its totient is φ = 320596371809248.

The previous prime is 641192743618487. The next prime is 641192743618591. The reversal of 641192743618498 is 894816347291146.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 623558681918649 + 17634061699849 = 24971157^2 + 4199293^2 .

It is a super-2 number, since 2×641192743618498² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 641192743618498.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160298185904623 + ... + 160298185904626.

Almost surely, 2^{641192743618498} is an apocalyptic number.

641192743618498 is a deficient number, since it is larger than the sum of its proper divisors (320596371809252).

641192743618498 is a wasteful number, since it uses less digits than its factorization.

641192743618498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320596371809251.

The product of its digits is 501645312, while the sum is 73.

The spelling of 641192743618498 in words is "six hundred forty-one trillion, one hundred ninety-two billion, seven hundred forty-three million, six hundred eighteen thousand, four hundred ninety-eight".