30775978005 has 8 divisors (see below), whose sum is σ = 49241564832. Its totient is φ = 16413854928.

The previous prime is 30775978001. The next prime is 30775978007. The reversal of 30775978005 is 50087957703.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30775978005 - 2² = 30775978001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30775978001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1025865919 + ... + 1025865948.

It is an arithmetic number, because the mean of its divisors is an integer number (6155195604).

Almost surely, 2^30775978005 is an apocalyptic number.

It is an amenable number.

30775978005 is a deficient number, since it is larger than the sum of its proper divisors (18465586827).

30775978005 is a wasteful number, since it uses less digits than its factorization.

30775978005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051731875.

The product of its (nonzero) digits is 1852200, while the sum is 51.

The spelling of 30775978005 in words is "thirty billion, seven hundred seventy-five million, nine hundred seventy-eight thousand, five".