80138023436 has 12 divisors (see below), whose sum is σ = 140245199640. Its totient is φ = 40067966400.

The previous prime is 80138023423. The next prime is 80138023457. The reversal of 80138023436 is 63432083108.

It is a self number, because there is not a number n which added to its sum of digits gives 80138023436.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73901 + ... + 407108.

It is an arithmetic number, because the mean of its divisors is an integer number (11687099970).

Almost surely, 2^80138023436 is an apocalyptic number.

It is an amenable number.

80138023436 is a deficient number, since it is larger than the sum of its proper divisors (60107176204).

80138023436 is a wasteful number, since it uses less digits than its factorization.

80138023436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522664 (or 522662 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 80138023436 in words is "eighty billion, one hundred thirty-eight million, twenty-three thousand, four hundred thirty-six".