38671617877 has 4 divisors (see below), whose sum is σ = 38674833100. Its totient is φ = 38668402656.

The previous prime is 38671617869. The next prime is 38671617899. The reversal of 38671617877 is 77871617683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77871617683 = 246661 ⋅315703.

It can be written as a sum of positive squares in 2 ways, for example, as 6274857796 + 32396760081 = 79214^2 + 179991^2 .

It is a cyclic number.

It is not a de Polignac number, because 38671617877 - 2³ = 38671617869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38671617577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1589502 + ... + 1613647.

It is an arithmetic number, because the mean of its divisors is an integer number (9668708275).

Almost surely, 2^38671617877 is an apocalyptic number.

It is an amenable number.

38671617877 is a deficient number, since it is larger than the sum of its proper divisors (3215223).

38671617877 is a wasteful number, since it uses less digits than its factorization.

38671617877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215222.

The product of its digits is 16595712, while the sum is 61.

The spelling of 38671617877 in words is "thirty-eight billion, six hundred seventy-one million, six hundred seventeen thousand, eight hundred seventy-seven".