3261637667220 has 96 divisors (see below), whose sum is σ = 9614340624000. Its totient is φ = 823899009024.

The previous prime is 3261637667219. The next prime is 3261637667263. The reversal of 3261637667220 is 227667361623.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10157772 + ... + 10473948.

It is an arithmetic number, because the mean of its divisors is an integer number (100149381500).

Almost surely, 2^{3261637667220} is an apocalyptic number.

3261637667220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3261637667220 is an abundant number, since it is smaller than the sum of its proper divisors (6352702956780).

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

3261637667220 is a wasteful number, since it uses less digits than its factorization.

3261637667220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325257 (or 325255 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 51.

The spelling of 3261637667220 in words is "three trillion, two hundred sixty-one billion, six hundred thirty-seven million, six hundred sixty-seven thousand, two hundred twenty".