80695493738 has 4 divisors (see below), whose sum is σ = 121043240610. Its totient is φ = 40347746868.

The previous prime is 80695493737. The next prime is 80695493771. The reversal of 80695493738 is 83739459608.

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., 45184729489 + 35510764249 = 212567^2 + 188443^2 .

It is not an unprimeable number, because it can be changed into a prime (80695493737) by changing a digit.

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 as a sum of consecutive naturals, namely, 20173873433 + ... + 20173873436.

Almost surely, 2^80695493738 is an apocalyptic number.

80695493738 is a deficient number, since it is larger than the sum of its proper divisors (40347746872).

80695493738 is a wasteful number, since it uses less digits than its factorization.

80695493738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40347746871.

The product of its (nonzero) digits is 39191040, while the sum is 62.

The spelling of 80695493738 in words is "eighty billion, six hundred ninety-five million, four hundred ninety-three thousand, seven hundred thirty-eight".