30406081912921 has 16 divisors (see below), whose sum is σ = 35722142467200. Its totient is φ = 25515370379520.

The previous prime is 30406081912897. The next prime is 30406081912949. The reversal of 30406081912921 is 12921918060403.

It is a cyclic number.

It is not a de Polignac number, because 30406081912921 - 2¹³ = 30406081904729 is a prime.

It is a super-3 number, since 3×30406081912921³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30406081912991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16664481 + ... + 18398833.

It is an arithmetic number, because the mean of its divisors is an integer number (2232633904200).

Almost surely, 2^{30406081912921} is an apocalyptic number.

It is an amenable number.

30406081912921 is a deficient number, since it is larger than the sum of its proper divisors (5316060554279).

30406081912921 is a wasteful number, since it uses less digits than its factorization.

30406081912921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856976.

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 30406081912921 in words is "thirty trillion, four hundred six billion, eighty-one million, nine hundred twelve thousand, nine hundred twenty-one".