30766387813 has 32 divisors (see below), whose sum is σ = 37610946560. Its totient is φ = 24610884480.

The previous prime is 30766387807. The next prime is 30766387819. The reversal of 30766387813 is 31878366703.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30766387807) and next prime (30766387819).

It is not a de Polignac number, because 30766387813 - 2⁵ = 30766387781 is a prime.

It is the 175404-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30766387819) by changing a digit.

It is a nontrivial repunit in base 175403.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 716281 + ... + 758017.

It is an arithmetic number, because the mean of its divisors is an integer number (1175342080).

Almost surely, 2^30766387813 is an apocalyptic number.

It is an amenable number.

30766387813 is a deficient number, since it is larger than the sum of its proper divisors (6844558747).

30766387813 is a wasteful number, since it uses less digits than its factorization.

30766387813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41897.

The product of its (nonzero) digits is 3048192, while the sum is 52.

The spelling of 30766387813 in words is "thirty billion, seven hundred sixty-six million, three hundred eighty-seven thousand, eight hundred thirteen".