38773872377840 has 20 divisors (see below), whose sum is σ = 90149253278664. Its totient is φ = 15509548951104.

The previous prime is 38773872377839. The next prime is 38773872377881. The reversal of 38773872377840 is 4877327837783.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242336702282 + ... + 242336702441.

Almost surely, 2^{38773872377840} is an apocalyptic number.

It is an amenable number.

38773872377840 is an abundant number, since it is smaller than the sum of its proper divisors (51375380900824).

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

38773872377840 is a wasteful number, since it uses less digits than its factorization.

38773872377840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484673404736 (or 484673404730 counting only the distinct ones).

The product of its (nonzero) digits is 1858719744, while the sum is 74.

The spelling of 38773872377840 in words is "thirty-eight trillion, seven hundred seventy-three billion, eight hundred seventy-two million, three hundred seventy-seven thousand, eight hundred forty".