30604440981 has 16 divisors (see below), whose sum is σ = 40993977024. Its totient is φ = 20309099904.

The previous prime is 30604440913. The next prime is 30604441009. The reversal of 30604440981 is 18904440603.

It is a happy number.

It is not a de Polignac number, because 30604440981 - 2²⁷ = 30470223253 is a prime.

It is a super-2 number, since 2×30604440981² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30604430981) 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, 732990 + ... + 773616.

It is an arithmetic number, because the mean of its divisors is an integer number (2562123564).

Almost surely, 2^30604440981 is an apocalyptic number.

It is an amenable number.

30604440981 is a deficient number, since it is larger than the sum of its proper divisors (10389536043).

30604440981 is a wasteful number, since it uses less digits than its factorization.

30604440981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41780.

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 30604440981 in words is "thirty billion, six hundred four million, four hundred forty thousand, nine hundred eighty-one".