81192476101 has 8 divisors (see below), whose sum is σ = 89433549504. Its totient is φ = 73094725920.

The previous prime is 81192476063. The next prime is 81192476149. The reversal of 81192476101 is 10167429118.

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

It is a cyclic number.

It is not a de Polignac number, because 81192476101 - 2¹⁵ = 81192443333 is a prime.

It is a super-2 number, since 2×81192476101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81192476191) 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, 35829616 + ... + 35831881.

It is an arithmetic number, because the mean of its divisors is an integer number (11179193688).

Almost surely, 2^81192476101 is an apocalyptic number.

It is an amenable number.

81192476101 is a deficient number, since it is larger than the sum of its proper divisors (8241073403).

81192476101 is a wasteful number, since it uses less digits than its factorization.

81192476101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71661611.

The product of its (nonzero) digits is 24192, while the sum is 40.

The spelling of 81192476101 in words is "eighty-one billion, one hundred ninety-two million, four hundred seventy-six thousand, one hundred one".