641454454146 has 32 divisors (see below), whose sum is σ = 1444683350016. Its totient is φ = 188109810000.

The previous prime is 641454454087. The next prime is 641454454211.

641454454146 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×641454454146² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641454454095 and 641454454104.

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, 156756130 + ... + 156760221.

It is an arithmetic number, because the mean of its divisors is an integer number (45146354688).

Almost surely, 2^641454454146 is an apocalyptic number.

641454454146 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

641454454146 is an abundant number, since it is smaller than the sum of its proper divisors (803228895870).

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

641454454146 is a wasteful number, since it uses less digits than its factorization.

641454454146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313516398.

The product of its digits is 3686400, while the sum is 48.

The spelling of 641454454146 in words is "six hundred forty-one billion, four hundred fifty-four million, four hundred fifty-four thousand, one hundred forty-six".