38320272991 has 96 divisors (see below), whose sum is σ = 53158461440. Its totient is φ = 26871989760.

The previous prime is 38320272983. The next prime is 38320272997. The reversal of 38320272991 is 19927202383.

It is not a de Polignac number, because 38320272991 - 2³ = 38320272983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38320272997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 93692395 + ... + 93692803.

Almost surely, 2^38320272991 is an apocalyptic number.

38320272991 is a deficient number, since it is larger than the sum of its proper divisors (14838188449).

38320272991 is a wasteful number, since it uses less digits than its factorization.

38320272991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 38320272991 in words is "thirty-eight billion, three hundred twenty million, two hundred seventy-two thousand, nine hundred ninety-one".