38994490720506 has 64 divisors (see below), whose sum is σ = 82827373271040. Its totient is φ = 12212217589440.

The previous prime is 38994490720499. The next prime is 38994490720517. The reversal of 38994490720506 is 60502709449983.

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, 7902091 + ... + 11850401.

It is an arithmetic number, because the mean of its divisors is an integer number (1294177707360).

Almost surely, 2^{38994490720506} is an apocalyptic number.

38994490720506 is an abundant number, since it is smaller than the sum of its proper divisors (43832882550534).

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

38994490720506 is a wasteful number, since it uses less digits than its factorization.

38994490720506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3949611.

The product of its (nonzero) digits is 117573120, while the sum is 66.

The spelling of 38994490720506 in words is "thirty-eight trillion, nine hundred ninety-four billion, four hundred ninety million, seven hundred twenty thousand, five hundred six".