30460872921 has 4 divisors (see below), whose sum is σ = 40614497232. Its totient is φ = 20307248612.

The previous prime is 30460872877. The next prime is 30460872931. The reversal of 30460872921 is 12927806403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30460872921 - 2¹⁴ = 30460856537 is a prime.

It is a super-2 number, since 2×30460872921² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30460872931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5076812151 + ... + 5076812156.

It is an arithmetic number, because the mean of its divisors is an integer number (10153624308).

Almost surely, 2^30460872921 is an apocalyptic number.

It is an amenable number.

30460872921 is a deficient number, since it is larger than the sum of its proper divisors (10153624311).

30460872921 is a wasteful number, since it uses less digits than its factorization.

30460872921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10153624310.

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 30460872921 in words is "thirty billion, four hundred sixty million, eight hundred seventy-two thousand, nine hundred twenty-one".