38555517540 has 48 divisors (see below), whose sum is σ = 114305772672. Its totient is φ = 9676678656.

The previous prime is 38555517509. The next prime is 38555517547. The reversal of 38555517540 is 4571555583.

It is a self number, because there is not a number n which added to its sum of digits gives 38555517540.

It is not an unprimeable number, because it can be changed into a prime (38555517547) 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, 18898744 + ... + 18900783.

It is an arithmetic number, because the mean of its divisors is an integer number (2381370264).

Almost surely, 2^38555517540 is an apocalyptic number.

38555517540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38555517540 is an abundant number, since it is smaller than the sum of its proper divisors (75750255132).

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

38555517540 is a wasteful number, since it uses less digits than its factorization.

38555517540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37799556 (or 37799554 counting only the distinct ones).

The product of its (nonzero) digits is 2100000, while the sum is 48.

The spelling of 38555517540 in words is "thirty-eight billion, five hundred fifty-five million, five hundred seventeen thousand, five hundred forty".