80750386531978 has 4 divisors (see below), whose sum is σ = 121125579797970. Its totient is φ = 40375193265988.

The previous prime is 80750386531957. The next prime is 80750386532041. The reversal of 80750386531978 is 87913568305708.

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

It can be written as a sum of positive squares in only one way, i.e., 80688054918409 + 62331613569 = 8982653^2 + 249663^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20187596632993 + ... + 20187596632996.

Almost surely, 2^{80750386531978} is an apocalyptic number.

80750386531978 is a deficient number, since it is larger than the sum of its proper divisors (40375193265992).

80750386531978 is a wasteful number, since it uses less digits than its factorization.

80750386531978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40375193265991.

The product of its (nonzero) digits is 304819200, while the sum is 70.

The spelling of 80750386531978 in words is "eighty trillion, seven hundred fifty billion, three hundred eighty-six million, five hundred thirty-one thousand, nine hundred seventy-eight".