641100133654 has 4 divisors (see below), whose sum is σ = 961650200484. Its totient is φ = 320550066826.

The previous prime is 641100133627. The next prime is 641100133679. The reversal of 641100133654 is 456331001146.

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

It is a super-2 number, since 2×641100133654² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160275033412 + ... + 160275033415.

It is an arithmetic number, because the mean of its divisors is an integer number (240412550121).

Almost surely, 2^641100133654 is an apocalyptic number.

641100133654 is a deficient number, since it is larger than the sum of its proper divisors (320550066830).

641100133654 is a wasteful number, since it uses less digits than its factorization.

641100133654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320550066829.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 641100133654 in words is "six hundred forty-one billion, one hundred million, one hundred thirty-three thousand, six hundred fifty-four".