38690904086780 has 96 divisors (see below), whose sum is σ = 88961981391360. Its totient is φ = 14017926977280.

The previous prime is 38690904086767. The next prime is 38690904086801. The reversal of 38690904086780 is 8768040909683.

It is a self number, because there is not a number n which added to its sum of digits gives 38690904086780.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168938186 + ... + 169167054.

It is an arithmetic number, because the mean of its divisors is an integer number (926687306160).

Almost surely, 2^{38690904086780} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38690904086780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44480990695680).

38690904086780 is an abundant number, since it is smaller than the sum of its proper divisors (50271077304580).

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

38690904086780 is a wasteful number, since it uses less digits than its factorization.

38690904086780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231699 (or 231697 counting only the distinct ones).

The product of its (nonzero) digits is 125411328, while the sum is 68.

The spelling of 38690904086780 in words is "thirty-eight trillion, six hundred ninety billion, nine hundred four million, eighty-six thousand, seven hundred eighty".