3261102640 has 40 divisors (see below), whose sum is σ = 7584456528. Its totient is φ = 1304029440.

The previous prime is 3261102631. The next prime is 3261102641. The reversal of 3261102640 is 462011623.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×3261102640² = 21269580857229939200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3261102641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448635 + ... + 455845.

Almost surely, 2^3261102640 is an apocalyptic number.

It is an amenable number.

3261102640 is an abundant number, since it is smaller than the sum of its proper divisors (4323353888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3261102640 is a wasteful number, since it uses less digits than its factorization.

3261102640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12877 (or 12871 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 3261102640 is about 57106.0648267765. The cubic root of 3261102640 is about 1482.9328620820.

The spelling of 3261102640 in words is "three billion, two hundred sixty-one million, one hundred two thousand, six hundred forty".