77725907930 has 32 divisors (see below), whose sum is σ = 155212303680. Its totient is φ = 27784913920.

The previous prime is 77725907929. The next prime is 77725907971. The reversal of 77725907930 is 3970952777.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5981639 + ... + 5994618.

It is an arithmetic number, because the mean of its divisors is an integer number (4850384490).

Almost surely, 2^77725907930 is an apocalyptic number.

77725907930 is a deficient number, since it is larger than the sum of its proper divisors (77486395750).

77725907930 is a wasteful number, since it uses less digits than its factorization.

77725907930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11976334.

The product of its (nonzero) digits is 5834430, while the sum is 56.

The spelling of 77725907930 in words is "seventy-seven billion, seven hundred twenty-five million, nine hundred seven thousand, nine hundred thirty".