30921653439796 has 24 divisors (see below), whose sum is σ = 62063389838016. Its totient is φ = 13204976554560.

The previous prime is 30921653439791. The next prime is 30921653439797. The reversal of 30921653439796 is 69793435612903.

It is a super-2 number, since 2×30921653439796² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30921653439791) 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, 1965018406 + ... + 1965034141.

It is an arithmetic number, because the mean of its divisors is an integer number (2585974576584).

Almost surely, 2^{30921653439796} is an apocalyptic number.

It is an amenable number.

30921653439796 is an abundant number, since it is smaller than the sum of its proper divisors (31141736398220).

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

30921653439796 is a wasteful number, since it uses less digits than its factorization.

30921653439796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3930052839 (or 3930052837 counting only the distinct ones).

The product of its (nonzero) digits is 198404640, while the sum is 67.

The spelling of 30921653439796 in words is "thirty trillion, nine hundred twenty-one billion, six hundred fifty-three million, four hundred thirty-nine thousand, seven hundred ninety-six".