3261772925856 has 72 divisors (see below), whose sum is σ = 9501902566884. Its totient is φ = 1060739159040.

The previous prime is 3261772925839. The next prime is 3261772925869. The reversal of 3261772925856 is 6585292771623.

3261772925856 is a `hidden beast` number, since 3 + 2 + 617 + 7 + 2 + 9 + 2 + 5 + 8 + 5 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2581999059600 + 679773866256 = 1606860^2 + 824484^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 3261772925793 and 3261772925802.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138105271 + ... + 138128886.

Almost surely, 2^{3261772925856} is an apocalyptic number.

3261772925856 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3261772925856 is an abundant number, since it is smaller than the sum of its proper divisors (6240129641028).

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

3261772925856 is a wasteful number, since it uses less digits than its factorization.

3261772925856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276234214 (or 276234203 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 63.

The spelling of 3261772925856 in words is "three trillion, two hundred sixty-one billion, seven hundred seventy-two million, nine hundred twenty-five thousand, eight hundred fifty-six".