30556122745 has 32 divisors (see below), whose sum is σ = 40821628320. Its totient is φ = 21849354240.

The previous prime is 30556122743. The next prime is 30556122757. The reversal of 30556122745 is 54722165503.

It can be written as a sum of positive squares in 16 ways, for example, as 12013036816 + 18543085929 = 109604^2 + 136173^2 .

It is not a de Polignac number, because 30556122745 - 2¹ = 30556122743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30556122698 and 30556122707.

It is not an unprimeable number, because it can be changed into a prime (30556122743) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48759 + ... + 251971.

It is an arithmetic number, because the mean of its divisors is an integer number (1275675885).

Almost surely, 2^30556122745 is an apocalyptic number.

It is an amenable number.

30556122745 is a deficient number, since it is larger than the sum of its proper divisors (10265505575).

30556122745 is a wasteful number, since it uses less digits than its factorization.

30556122745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203325.

The product of its (nonzero) digits is 252000, while the sum is 40.

The spelling of 30556122745 in words is "thirty billion, five hundred fifty-six million, one hundred twenty-two thousand, seven hundred forty-five".