30690500651 has 4 divisors (see below), whose sum is σ = 30874276272. Its totient is φ = 30506725032.

The previous prime is 30690500627. The next prime is 30690500657. The reversal of 30690500651 is 15600509603.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30690500651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30690500657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91887560 + ... + 91887893.

It is an arithmetic number, because the mean of its divisors is an integer number (7718569068).

Almost surely, 2^30690500651 is an apocalyptic number.

30690500651 is a deficient number, since it is larger than the sum of its proper divisors (183775621).

30690500651 is a wasteful number, since it uses less digits than its factorization.

30690500651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183775620.

The product of its (nonzero) digits is 24300, while the sum is 35.

The spelling of 30690500651 in words is "thirty billion, six hundred ninety million, five hundred thousand, six hundred fifty-one".