30253557021 has 16 divisors (see below), whose sum is σ = 41198646720. Its totient is φ = 19743212160.

The previous prime is 30253557001. The next prime is 30253557029. The reversal of 30253557021 is 12075535203.

It is not a de Polignac number, because 30253557021 - 2¹⁴ = 30253540637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30253557029) 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, 530200 + ... + 584481.

It is an arithmetic number, because the mean of its divisors is an integer number (2574915420).

Almost surely, 2^30253557021 is an apocalyptic number.

It is an amenable number.

30253557021 is a deficient number, since it is larger than the sum of its proper divisors (10945089699).

30253557021 is a wasteful number, since it uses less digits than its factorization.

30253557021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114876.

The product of its (nonzero) digits is 31500, while the sum is 33.

The spelling of 30253557021 in words is "thirty billion, two hundred fifty-three million, five hundred fifty-seven thousand, twenty-one".