81602699298 has 16 divisors (see below), whose sum is σ = 163235122176. Its totient is φ = 27195945840.

The previous prime is 81602699267. The next prime is 81602699329. The reversal of 81602699298 is 89299620618.

It is an interprime number because it is at equal distance from previous prime (81602699267) and next prime (81602699329).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1202713 + ... + 1268748.

It is an arithmetic number, because the mean of its divisors is an integer number (10202195136).

Almost surely, 2^81602699298 is an apocalyptic number.

81602699298 is an abundant number, since it is smaller than the sum of its proper divisors (81632422878).

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

81602699298 is a wasteful number, since it uses less digits than its factorization.

81602699298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476969.

The product of its (nonzero) digits is 6718464, while the sum is 60.

The spelling of 81602699298 in words is "eighty-one billion, six hundred two million, six hundred ninety-nine thousand, two hundred ninety-eight".