3862380121557 has 64 divisors (see below), whose sum is σ = 5514049781760. Its totient is φ = 2401978138560.

The previous prime is 3862380121553. The next prime is 3862380121583. The reversal of 3862380121557 is 7551210832683.

It is a happy number.

It is not a de Polignac number, because 3862380121557 - 2² = 3862380121553 is a prime.

It is a super-2 number, since 2×3862380121557² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3862380121553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2910609828 + ... + 2910611154.

It is an arithmetic number, because the mean of its divisors is an integer number (86157027840).

Almost surely, 2^{3862380121557} is an apocalyptic number.

It is an amenable number.

3862380121557 is a deficient number, since it is larger than the sum of its proper divisors (1651669660203).

3862380121557 is a wasteful number, since it uses less digits than its factorization.

3862380121557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575 (or 2513 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 3862380121557 in words is "three trillion, eight hundred sixty-two billion, three hundred eighty million, one hundred twenty-one thousand, five hundred fifty-seven".