1538265413220 has 48 divisors (see below), whose sum is σ = 4308354646848. Its totient is φ = 410088730240.

The previous prime is 1538265413161. The next prime is 1538265413221. The reversal of 1538265413220 is 223145628351.

It is not an unprimeable number, because it can be changed into a prime (1538265413221) 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, 3390426 + ... + 3817265.

It is an arithmetic number, because the mean of its divisors is an integer number (89757388476).

Almost surely, 2^{1538265413220} is an apocalyptic number.

1538265413220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1538265413220 is an abundant number, since it is smaller than the sum of its proper divisors (2770089233628).

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

1538265413220 is a wasteful number, since it uses less digits than its factorization.

1538265413220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7211260 (or 7211258 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 1538265413220 in words is "one trillion, five hundred thirty-eight billion, two hundred sixty-five million, four hundred thirteen thousand, two hundred twenty".