30620133013661 has 4 divisors (see below), whose sum is σ = 30620145612924. Its totient is φ = 30620120414400.

The previous prime is 30620133013597. The next prime is 30620133013681. The reversal of 30620133013661 is 16631033102603.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 22077922651225 + 8542210362436 = 4698715^2 + 2922706^2 .

It is a cyclic number.

It is not a de Polignac number, because 30620133013661 - 2⁶ = 30620133013597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30620133013681) 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, 1366460 + ... + 7944021.

It is an arithmetic number, because the mean of its divisors is an integer number (7655036403231).

Almost surely, 2^{30620133013661} is an apocalyptic number.

It is an amenable number.

30620133013661 is a deficient number, since it is larger than the sum of its proper divisors (12599263).

30620133013661 is an equidigital number, since it uses as much as digits as its factorization.

30620133013661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12599262.

The product of its (nonzero) digits is 34992, while the sum is 35.

The spelling of 30620133013661 in words is "thirty trillion, six hundred twenty billion, one hundred thirty-three million, thirteen thousand, six hundred sixty-one".