81601101762 has 8 divisors (see below), whose sum is σ = 163202203536. Its totient is φ = 27200367252.

The previous prime is 81601101761. The next prime is 81601101767. The reversal of 81601101762 is 26710110618.

It is a happy number.

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

81601101762 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (81601101761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6800091808 + ... + 6800091819.

It is an arithmetic number, because the mean of its divisors is an integer number (20400275442).

Almost surely, 2^81601101762 is an apocalyptic number.

81601101762 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81601101762 is a wasteful number, since it uses less digits than its factorization.

81601101762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13600183632.

The product of its (nonzero) digits is 4032, while the sum is 33.

The spelling of 81601101762 in words is "eighty-one billion, six hundred one million, one hundred one thousand, seven hundred sixty-two".