30636742261 has 4 divisors (see below), whose sum is σ = 32249202400. Its totient is φ = 29024282124.

The previous prime is 30636742231. The next prime is 30636742289. The reversal of 30636742261 is 16224763603.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 30636742261 - 2⁵ = 30636742229 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 (30636742231) 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, 806230041 + ... + 806230078.

It is an arithmetic number, because the mean of its divisors is an integer number (8062300600).

Almost surely, 2^30636742261 is an apocalyptic number.

It is an amenable number.

30636742261 is a deficient number, since it is larger than the sum of its proper divisors (1612460139).

30636742261 is a wasteful number, since it uses less digits than its factorization.

30636742261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612460138.

The product of its (nonzero) digits is 217728, while the sum is 40.

The spelling of 30636742261 in words is "thirty billion, six hundred thirty-six million, seven hundred forty-two thousand, two hundred sixty-one".