30516732975961 has 4 divisors (see below), whose sum is σ = 30517962473124. Its totient is φ = 30515503478800.

The previous prime is 30516732975923. The next prime is 30516732975977. The reversal of 30516732975961 is 16957923761503.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13063388577561 + 17453344398400 = 3614331^2 + 4177720^2 .

It is a cyclic number.

It is not a de Polignac number, because 30516732975961 - 2¹¹ = 30516732973913 is a prime.

It is a super-2 number, since 2×30516732975961² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30516732975893 and 30516732975902.

It is not an unprimeable number, because it can be changed into a prime (30516732975161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 614711350 + ... + 614760991.

It is an arithmetic number, because the mean of its divisors is an integer number (7629490618281).

Almost surely, 2^{30516732975961} is an apocalyptic number.

It is an amenable number.

30516732975961 is a deficient number, since it is larger than the sum of its proper divisors (1229497163).

30516732975961 is a wasteful number, since it uses less digits than its factorization.

30516732975961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229497162.

The product of its (nonzero) digits is 64297800, while the sum is 64.

The spelling of 30516732975961 in words is "thirty trillion, five hundred sixteen billion, seven hundred thirty-two million, nine hundred seventy-five thousand, nine hundred sixty-one".