38403687785772 has 12 divisors (see below), whose sum is σ = 89608604833496. Its totient is φ = 12801229261920.

The previous prime is 38403687785767. The next prime is 38403687785867. The reversal of 38403687785772 is 27758778630483.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 38403687785694 and 38403687785703.

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, 1600153657729 + ... + 1600153657752.

Almost surely, 2^{38403687785772} is an apocalyptic number.

It is an amenable number.

38403687785772 is an abundant number, since it is smaller than the sum of its proper divisors (51204917047724).

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

38403687785772 is a wasteful number, since it uses less digits than its factorization.

38403687785772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200307315488 (or 3200307315486 counting only the distinct ones).

The product of its (nonzero) digits is 2655313920, while the sum is 75.

The spelling of 38403687785772 in words is "thirty-eight trillion, four hundred three billion, six hundred eighty-seven million, seven hundred eighty-five thousand, seven hundred seventy-two".