3287634577921 has 4 divisors (see below), whose sum is σ = 3318360134832. Its totient is φ = 3256909021012.

The previous prime is 3287634577859. The next prime is 3287634577949. The reversal of 3287634577921 is 1297754367823.

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 a de Polignac number, because none of the positive numbers 2^k-3287634577921 is a prime.

It is a super-2 number, since 2×3287634577921² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3287634527921) 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, 15362778295 + ... + 15362778508.

It is an arithmetic number, because the mean of its divisors is an integer number (829590033708).

Almost surely, 2^{3287634577921} is an apocalyptic number.

It is an amenable number.

3287634577921 is a deficient number, since it is larger than the sum of its proper divisors (30725556911).

3287634577921 is a wasteful number, since it uses less digits than its factorization.

3287634577921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30725556910.

The product of its digits is 106686720, while the sum is 64.

The spelling of 3287634577921 in words is "three trillion, two hundred eighty-seven billion, six hundred thirty-four million, five hundred seventy-seven thousand, nine hundred twenty-one".