3257981999992 has 32 divisors (see below), whose sum is σ = 6374661703200. Its totient is φ = 1558079970304.

The previous prime is 3257981999977. The next prime is 3257982000001. The reversal of 3257981999992 is 2999991897523.

It is a super-2 number, since 2×3257981999992² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2949984 + ... + 3901072.

It is an arithmetic number, because the mean of its divisors is an integer number (199208178225).

Almost surely, 2^{3257981999992} is an apocalyptic number.

It is an amenable number.

3257981999992 is a deficient number, since it is larger than the sum of its proper divisors (3116679703208).

3257981999992 is a wasteful number, since it uses less digits than its factorization.

3257981999992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969735 (or 969731 counting only the distinct ones).

The product of its digits is 1785641760, while the sum is 82.

The spelling of 3257981999992 in words is "three trillion, two hundred fifty-seven billion, nine hundred eighty-one million, nine hundred ninety-nine thousand, nine hundred ninety-two".