30718972445 has 24 divisors (see below), whose sum is σ = 44264452608. Its totient is φ = 20384935200.

The previous prime is 30718972439. The next prime is 30718972451. The reversal of 30718972445 is 54427981703.

It is an interprime number because it is at equal distance from previous prime (30718972439) and next prime (30718972451).

It is not a de Polignac number, because 30718972445 - 2⁶ = 30718972381 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30718972393 and 30718972402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2014721 + ... + 2029910.

It is an arithmetic number, because the mean of its divisors is an integer number (1844352192).

Almost surely, 2^30718972445 is an apocalyptic number.

30718972445 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30718972445 is a deficient number, since it is larger than the sum of its proper divisors (13545480163).

30718972445 is a wasteful number, since it uses less digits than its factorization.

30718972445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4044681 (or 4044674 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 30718972445 in words is "thirty billion, seven hundred eighteen million, nine hundred seventy-two thousand, four hundred forty-five".