38195557440 has 56 divisors (see below), whose sum is σ = 121270897920. Its totient is φ = 10185481728.

The previous prime is 38195557429. The next prime is 38195557441. The reversal of 38195557440 is 4475559183.

It is not an unprimeable number, because it can be changed into a prime (38195557441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19892560 + ... + 19894479.

Almost surely, 2^38195557440 is an apocalyptic number.

38195557440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38195557440 is an abundant number, since it is smaller than the sum of its proper divisors (83075340480).

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

38195557440 is a wasteful number, since it uses less digits than its factorization.

38195557440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39787059 (or 39787049 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 51.

The spelling of 38195557440 in words is "thirty-eight billion, one hundred ninety-five million, five hundred fifty-seven thousand, four hundred forty".