77982153388 has 24 divisors (see below), whose sum is σ = 141193543680. Its totient is φ = 37641502080.

The previous prime is 77982153331. The next prime is 77982153427. The reversal of 77982153388 is 88335128977.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 909120 + ... + 991192.

It is an arithmetic number, because the mean of its divisors is an integer number (5883064320).

Almost surely, 2^77982153388 is an apocalyptic number.

It is an amenable number.

77982153388 is a deficient number, since it is larger than the sum of its proper divisors (63211390292).

77982153388 is a wasteful number, since it uses less digits than its factorization.

77982153388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90297 (or 90295 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 61.

The spelling of 77982153388 in words is "seventy-seven billion, nine hundred eighty-two million, one hundred fifty-three thousand, three hundred eighty-eight".