81600377433 has 8 divisors (see below), whose sum is σ = 114526845600. Its totient is φ = 51537080448.

The previous prime is 81600377399. The next prime is 81600377447. The reversal of 81600377433 is 33477300618.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 81600377433 - 2¹⁴ = 81600361049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81600375433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 715792728 + ... + 715792841.

It is an arithmetic number, because the mean of its divisors is an integer number (14315855700).

Almost surely, 2^81600377433 is an apocalyptic number.

It is an amenable number.

81600377433 is a deficient number, since it is larger than the sum of its proper divisors (32926468167).

81600377433 is a wasteful number, since it uses less digits than its factorization.

81600377433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431585591.

The product of its (nonzero) digits is 254016, while the sum is 42.

The spelling of 81600377433 in words is "eighty-one billion, six hundred million, three hundred seventy-seven thousand, four hundred thirty-three".