80136387 has 6 divisors (see below), whose sum is σ = 115752572. Its totient is φ = 53424252.

The previous prime is 80136383. The next prime is 80136403. The reversal of 80136387 is 78363108.

80136387 is a `hidden beast` number, since 8 + 0 + 13 + 638 + 7 = 666.

It is not a de Polignac number, because 80136387 - 2² = 80136383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80136383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4452013 + ... + 4452030.

Almost surely, 2^80136387 is an apocalyptic number.

80136387 is a deficient number, since it is larger than the sum of its proper divisors (35616185).

80136387 is a wasteful number, since it uses less digits than its factorization.

80136387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8904049 (or 8904046 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 80136387 is about 8951.8929283141. The cubic root of 80136387 is about 431.1316630569.

It can be divided in two parts, 8013 and 6387, that added together give a square (14400 = 120²).

The spelling of 80136387 in words is "eighty million, one hundred thirty-six thousand, three hundred eighty-seven".