38778395555 has 16 divisors (see below), whose sum is σ = 47131096320. Its totient is φ = 30625279968.

The previous prime is 38778395533. The next prime is 38778395561. The reversal of 38778395555 is 55559387783.

It is a cyclic number.

It is not a de Polignac number, because 38778395555 - 2¹⁰ = 38778394531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38778395491 and 38778395500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 511964 + ... + 582806.

It is an arithmetic number, because the mean of its divisors is an integer number (2945693520).

Almost surely, 2^38778395555 is an apocalyptic number.

38778395555 is a deficient number, since it is larger than the sum of its proper divisors (8352700765).

38778395555 is a wasteful number, since it uses less digits than its factorization.

38778395555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72250.

The product of its digits is 158760000, while the sum is 65.

The spelling of 38778395555 in words is "thirty-eight billion, seven hundred seventy-eight million, three hundred ninety-five thousand, five hundred fifty-five".