30172121360 has 40 divisors (see below), whose sum is σ = 70161759360. Its totient is φ = 12066856832.

The previous prime is 30172121321. The next prime is 30172121381. The reversal of 30172121360 is 6312127103.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516521 + ... + 571959.

It is an arithmetic number, because the mean of its divisors is an integer number (1754043984).

Almost surely, 2^30172121360 is an apocalyptic number.

It is an amenable number.

30172121360 is an abundant number, since it is smaller than the sum of its proper divisors (39989638000).

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

30172121360 is a wasteful number, since it uses less digits than its factorization.

30172121360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62255 (or 62249 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

Adding to 30172121360 its reverse (6312127103), we get a palindrome (36484248463).

The spelling of 30172121360 in words is "thirty billion, one hundred seventy-two million, one hundred twenty-one thousand, three hundred sixty".