641401702627 has 16 divisors (see below), whose sum is σ = 764944745472. Its totient is φ = 525839925600.

The previous prime is 641401702619. The next prime is 641401702633. The reversal of 641401702627 is 726207104146.

It is a cyclic number.

It is not a de Polignac number, because 641401702627 - 2³ = 641401702619 is a prime.

It is a super-2 number, since 2×641401702627² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 641401702627.

It is not an unprimeable number, because it can be changed into a prime (641401702027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3004258 + ... + 3210664.

It is an arithmetic number, because the mean of its divisors is an integer number (47809046592).

Almost surely, 2^641401702627 is an apocalyptic number.

641401702627 is a deficient number, since it is larger than the sum of its proper divisors (123543042845).

641401702627 is a wasteful number, since it uses less digits than its factorization.

641401702627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225738.

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 641401702627 in words is "six hundred forty-one billion, four hundred one million, seven hundred two thousand, six hundred twenty-seven".