30561206613620 has 48 divisors (see below), whose sum is σ = 65058909983760. Its totient is φ = 12056798232576.

The previous prime is 30561206613529. The next prime is 30561206613677. The reversal of 30561206613620 is 2631660216503.

It can be written as a sum of positive squares in 8 ways, for example, as 24110636176 + 30537095977444 = 155276^2 + 5526038^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92973716 + ... + 93301844.

It is an arithmetic number, because the mean of its divisors is an integer number (1355393957995).

Almost surely, 2^{30561206613620} is an apocalyptic number.

It is an amenable number.

30561206613620 is an abundant number, since it is smaller than the sum of its proper divisors (34497703370140).

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

30561206613620 is a wasteful number, since it uses less digits than its factorization.

30561206613620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392004 (or 392002 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 41.

The spelling of 30561206613620 in words is "thirty trillion, five hundred sixty-one billion, two hundred six million, six hundred thirteen thousand, six hundred twenty".