641105625615 has 64 divisors (see below), whose sum is σ = 1263771887616. Its totient is φ = 270256707072.

The previous prime is 641105625613. The next prime is 641105625619. The reversal of 641105625615 is 516526501146.

It is not a de Polignac number, because 641105625615 - 2¹ = 641105625613 is a prime.

It is a super-2 number, since 2×641105625615² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641105625613) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 1102897 + ... + 1580693.

It is an arithmetic number, because the mean of its divisors is an integer number (19746435744).

Almost surely, 2^641105625615 is an apocalyptic number.

641105625615 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

641105625615 is a deficient number, since it is larger than the sum of its proper divisors (622666262001).

641105625615 is a wasteful number, since it uses less digits than its factorization.

641105625615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478808.

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 641105625615 in words is "six hundred forty-one billion, one hundred five million, six hundred twenty-five thousand, six hundred fifteen".