30451664898 has 18 divisors (see below), whose sum is σ = 65980211427. Its totient is φ = 10150308180.

The previous prime is 30451664891. The next prime is 30451664899. The reversal of 30451664898 is 89846615403.

30451664898 is a `hidden beast` number, since 3 + 0 + 451 + 66 + 48 + 98 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15225832449 + 15225832449 = 123393^2 + 123393^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=123393.

It is not an unprimeable number, because it can be changed into a prime (30451664891) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 719793 + ... + 760923.

Almost surely, 2^30451664898 is an apocalyptic number.

30451664898 is an abundant number, since it is smaller than the sum of its proper divisors (35528546529).

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

30451664898 is an frugal number, since it uses more digits than its factorization.

30451664898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82270 (or 41136 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 30451664898 in words is "thirty billion, four hundred fifty-one million, six hundred sixty-four thousand, eight hundred ninety-eight".