30649497671 has 4 divisors (see below), whose sum is σ = 33007151352. Its totient is φ = 28291843992.

The previous prime is 30649497631. The next prime is 30649497679. The reversal of 30649497671 is 17679494603.

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-30649497671 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 (30649497679) 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, 1178826821 + ... + 1178826846.

It is an arithmetic number, because the mean of its divisors is an integer number (8251787838).

Almost surely, 2^30649497671 is an apocalyptic number.

30649497671 is a deficient number, since it is larger than the sum of its proper divisors (2357653681).

30649497671 is a wasteful number, since it uses less digits than its factorization.

30649497671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357653680.

The product of its (nonzero) digits is 6858432, while the sum is 56.

The spelling of 30649497671 in words is "thirty billion, six hundred forty-nine million, four hundred ninety-seven thousand, six hundred seventy-one".