81167606410 has 16 divisors (see below), whose sum is σ = 159383663712. Its totient is φ = 29515493200.

The previous prime is 81167606407. The next prime is 81167606413. The reversal of 81167606410 is 1460676118.

It is an interprime number because it is at equal distance from previous prime (81167606407) and next prime (81167606413).

It is not an unprimeable number, because it can be changed into a prime (81167606413) 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, 368943556 + ... + 368943775.

It is an arithmetic number, because the mean of its divisors is an integer number (9961478982).

Almost surely, 2^81167606410 is an apocalyptic number.

81167606410 is a deficient number, since it is larger than the sum of its proper divisors (78216057302).

81167606410 is a wasteful number, since it uses less digits than its factorization.

81167606410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737887349.

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 81167606410 in words is "eighty-one billion, one hundred sixty-seven million, six hundred six thousand, four hundred ten".