30921653439794 has 8 divisors (see below), whose sum is σ = 49950363248940. Its totient is φ = 14271532356816.

The previous prime is 30921653439791. The next prime is 30921653439797. The reversal of 30921653439794 is 49793435612903.

It is an interprime number because it is at equal distance from previous prime (30921653439791) and next prime (30921653439797).

It can be written as a sum of positive squares in 2 ways, for example, as 30538941702025 + 382711737769 = 5526205^2 + 618637^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×30921653439794² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30921653439794.

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 3 ways as a sum of consecutive naturals, for example, 594647181509 + ... + 594647181560.

Almost surely, 2^{30921653439794} is an apocalyptic number.

30921653439794 is a deficient number, since it is larger than the sum of its proper divisors (19028709809146).

30921653439794 is a wasteful number, since it uses less digits than its factorization.

30921653439794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189294363084.

The product of its (nonzero) digits is 132269760, while the sum is 65.

The spelling of 30921653439794 in words is "thirty trillion, nine hundred twenty-one billion, six hundred fifty-three million, four hundred thirty-nine thousand, seven hundred ninety-four".