81015593607402 has 16 divisors (see below), whose sum is σ = 162363900130752. Its totient is φ = 26949745716480.

The previous prime is 81015593607397. The next prime is 81015593607419. The reversal of 81015593607402 is 20470639551018.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13863034999 + ... + 13863040842.

It is an arithmetic number, because the mean of its divisors is an integer number (10147743758172).

It is a 1-persistent number, because it is pandigital, but 2⋅81015593607402 = 162031187214804 is not.

Almost surely, 2^{81015593607402} is an apocalyptic number.

81015593607402 is an abundant number, since it is smaller than the sum of its proper divisors (81348306523350).

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

81015593607402 is a wasteful number, since it uses less digits than its factorization.

81015593607402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27726076333.

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 81015593607402 in words is "eighty-one trillion, fifteen billion, five hundred ninety-three million, six hundred seven thousand, four hundred two".