6121982872 has 8 divisors (see below), whose sum is σ = 11478717900. Its totient is φ = 3060991432.

The previous prime is 6121982869. The next prime is 6121982879. The reversal of 6121982872 is 2782891216.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×6121982872² = 74957348570122736768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6121982879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382623922 + ... + 382623937.

Almost surely, 2^6121982872 is an apocalyptic number.

It is an amenable number.

6121982872 is a deficient number, since it is larger than the sum of its proper divisors (5356735028).

6121982872 is a wasteful number, since it uses less digits than its factorization.

6121982872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765247865 (or 765247861 counting only the distinct ones).

The product of its digits is 193536, while the sum is 46.

The square root of 6121982872 is about 78243.1011144114. The cubic root of 6121982872 is about 1829.3523813502.

The spelling of 6121982872 in words is "six billion, one hundred twenty-one million, nine hundred eighty-two thousand, eight hundred seventy-two".