38156331280 has 80 divisors (see below), whose sum is σ = 89758098864. Its totient is φ = 15083274240.

The previous prime is 38156331271. The next prime is 38156331281. The reversal of 38156331280 is 8213365183.

It can be written as a sum of positive squares in 8 ways, for example, as 8588840976 + 29567490304 = 92676^2 + 171952^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (38156331281) 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, 5995300 + ... + 6001660.

Almost surely, 2^38156331280 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 38156331280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44879049432).

38156331280 is an abundant number, since it is smaller than the sum of its proper divisors (51601767584).

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

38156331280 is a wasteful number, since it uses less digits than its factorization.

38156331280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7244 (or 7238 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 38156331280 in words is "thirty-eight billion, one hundred fifty-six million, three hundred thirty-one thousand, two hundred eighty".