3647940332401 has 4 divisors (see below), whose sum is σ = 3648319112704. Its totient is φ = 3647561552100.

The previous prime is 3647940332339. The next prime is 3647940332423. The reversal of 3647940332401 is 1042330497463.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3647940332401 - 2³⁵ = 3613580594033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3647940332441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189375705 + ... + 189394966.

It is an arithmetic number, because the mean of its divisors is an integer number (912079778176).

Almost surely, 2^{3647940332401} is an apocalyptic number.

It is an amenable number.

3647940332401 is a deficient number, since it is larger than the sum of its proper divisors (378780303).

3647940332401 is an equidigital number, since it uses as much as digits as its factorization.

3647940332401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378780302.

The product of its (nonzero) digits is 1306368, while the sum is 46.

The spelling of 3647940332401 in words is "three trillion, six hundred forty-seven billion, nine hundred forty million, three hundred thirty-two thousand, four hundred one".