641320106255 has 16 divisors (see below), whose sum is σ = 780211558560. Its totient is φ = 505972666368.

The previous prime is 641320106243. The next prime is 641320106269. The reversal of 641320106255 is 552601023146.

It is not a de Polignac number, because 641320106255 - 2¹⁸ = 641319844111 is a prime.

It is a super-2 number, since 2×641320106255² (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 in 15 ways as a sum of consecutive naturals, for example, 3428591 + ... + 3610799.

It is an arithmetic number, because the mean of its divisors is an integer number (48763222410).

Almost surely, 2^641320106255 is an apocalyptic number.

641320106255 is a deficient number, since it is larger than the sum of its proper divisors (138891452305).

641320106255 is a wasteful number, since it uses less digits than its factorization.

641320106255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191930.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 641320106255 in words is "six hundred forty-one billion, three hundred twenty million, one hundred six thousand, two hundred fifty-five".