77975293148 has 24 divisors (see below), whose sum is σ = 142177753200. Its totient is φ = 37372422528.

The previous prime is 77975293091. The next prime is 77975293157. The reversal of 77975293148 is 84139257977.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2401865 + ... + 2434112.

It is an arithmetic number, because the mean of its divisors is an integer number (5924073050).

Almost surely, 2^77975293148 is an apocalyptic number.

It is an amenable number.

77975293148 is a deficient number, since it is larger than the sum of its proper divisors (64202460052).

77975293148 is a wasteful number, since it uses less digits than its factorization.

77975293148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4836149 (or 4836147 counting only the distinct ones).

The product of its digits is 26671680, while the sum is 62.

The spelling of 77975293148 in words is "seventy-seven billion, nine hundred seventy-five million, two hundred ninety-three thousand, one hundred forty-eight".