38994491761020 has 72 divisors (see below), whose sum is σ = 118316214119376. Its totient is φ = 10395636855552.

The previous prime is 38994491761019. The next prime is 38994491761033. The reversal of 38994491761020 is 2016719449983.

38994491761020 is a `hidden beast` number, since 3 + 8 + 9 + 9 + 4 + 4 + 9 + 1 + 7 + 610 + 2 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29500222 + ... + 30793701.

It is an arithmetic number, because the mean of its divisors is an integer number (1643280751658).

Almost surely, 2^{38994491761020} is an apocalyptic number.

38994491761020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38994491761020 is an abundant number, since it is smaller than the sum of its proper divisors (79321722358356).

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

38994491761020 is a wasteful number, since it uses less digits than its factorization.

38994491761020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60297531 (or 60297526 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 63.

The spelling of 38994491761020 in words is "thirty-eight trillion, nine hundred ninety-four billion, four hundred ninety-one million, seven hundred sixty-one thousand, twenty".