38791377740 has 72 divisors (see below), whose sum is σ = 86595783120. Its totient is φ = 14593758336.

The previous prime is 38791377731. The next prime is 38791377749. The reversal of 38791377740 is 4777319783.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (38791377731) and next prime (38791377749).

It is not an unprimeable number, because it can be changed into a prime (38791377749) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 984254 + ... + 1022906.

It is an arithmetic number, because the mean of its divisors is an integer number (1202719210).

Almost surely, 2^38791377740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38791377740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43297891560).

38791377740 is an abundant number, since it is smaller than the sum of its proper divisors (47804405380).

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

38791377740 is a wasteful number, since it uses less digits than its factorization.

38791377740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38839 (or 38818 counting only the distinct ones).

The product of its (nonzero) digits is 6223392, while the sum is 56.

The spelling of 38791377740 in words is "thirty-eight billion, seven hundred ninety-one million, three hundred seventy-seven thousand, seven hundred forty".