641764424426 has 32 divisors (see below), whose sum is σ = 1011474729216. Its totient is φ = 304801200000.

The previous prime is 641764424423. The next prime is 641764424429. The reversal of 641764424426 is 624424467146.

It is an interprime number because it is at equal distance from previous prime (641764424423) and next prime (641764424429).

It is not an unprimeable number, because it can be changed into a prime (641764424423) 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, 24860726 + ... + 24886526.

It is an arithmetic number, because the mean of its divisors is an integer number (31608585288).

Almost surely, 2^641764424426 is an apocalyptic number.

641764424426 is a deficient number, since it is larger than the sum of its proper divisors (369710304790).

641764424426 is a wasteful number, since it uses less digits than its factorization.

641764424426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29558.

The product of its digits is 6193152, while the sum is 50.

The spelling of 641764424426 in words is "six hundred forty-one billion, seven hundred sixty-four million, four hundred twenty-four thousand, four hundred twenty-six".