38776145663 has 16 divisors (see below), whose sum is σ = 39586370880. Its totient is φ = 37976380416.

The previous prime is 38776145651. The next prime is 38776145689. The reversal of 38776145663 is 36654167783.

It is a cyclic number.

It is not a de Polignac number, because 38776145663 - 2¹⁰ = 38776144639 is a prime.

It is a super-4 number, since 4×38776145663⁴ (a number of 43 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38776145599 and 38776145608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38776145263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3704345 + ... + 3714797.

It is an arithmetic number, because the mean of its divisors is an integer number (2474148180).

Almost surely, 2^38776145663 is an apocalyptic number.

38776145663 is a deficient number, since it is larger than the sum of its proper divisors (810225217).

38776145663 is a wasteful number, since it uses less digits than its factorization.

38776145663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10946.

The product of its digits is 15240960, while the sum is 56.

The spelling of 38776145663 in words is "thirty-eight billion, seven hundred seventy-six million, one hundred forty-five thousand, six hundred sixty-three".