36681836693502 has 128 divisors (see below), whose sum is σ = 98566137815040. Its totient is φ = 8789143904640.

The previous prime is 36681836693497. The next prime is 36681836693519. The reversal of 36681836693502 is 20539663818663.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7288149 + ... + 11246367.

It is an arithmetic number, because the mean of its divisors is an integer number (770047951680).

Almost surely, 2^{36681836693502} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36681836693502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49283068907520).

36681836693502 is an abundant number, since it is smaller than the sum of its proper divisors (61884301121538).

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

36681836693502 is a wasteful number, since it uses less digits than its factorization.

36681836693502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3959798.

The product of its (nonzero) digits is 201553920, while the sum is 66.

The spelling of 36681836693502 in words is "thirty-six trillion, six hundred eighty-one billion, eight hundred thirty-six million, six hundred ninety-three thousand, five hundred two".