30730505715 has 96 divisors (see below), whose sum is σ = 65705867136. Its totient is φ = 12938434560.

The previous prime is 30730505699. The next prime is 30730505723. The reversal of 30730505715 is 51750503703.

It is a happy number.

30730505715 is a `hidden beast` number, since 3 + 0 + 7 + 30 + 50 + 571 + 5 = 666.

It is not a de Polignac number, because 30730505715 - 2⁴ = 30730505699 is a prime.

It is a super-2 number, since 2×30730505715² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30730505715.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1863205 + ... + 1879625.

It is an arithmetic number, because the mean of its divisors is an integer number (684436116).

Almost surely, 2^30730505715 is an apocalyptic number.

30730505715 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30730505715 is an abundant number, since it is smaller than the sum of its proper divisors (34975361421).

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

30730505715 is a wasteful number, since it uses less digits than its factorization.

30730505715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16909 (or 16906 counting only the distinct ones).

The product of its (nonzero) digits is 55125, while the sum is 36.

The spelling of 30730505715 in words is "thirty billion, seven hundred thirty million, five hundred five thousand, seven hundred fifteen".