2537166381220 has 48 divisors (see below), whose sum is σ = 5382488765808. Its totient is φ = 1004503449600.

The previous prime is 2537166381161. The next prime is 2537166381223. The reversal of 2537166381220 is 221836617352.

It can be written as a sum of positive squares in 8 ways, for example, as 1232650621504 + 1304515759716 = 1110248^2 + 1142154^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2537166381223) 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, 6303124 + ... + 6693556.

It is an arithmetic number, because the mean of its divisors is an integer number (112135182621).

Almost surely, 2^{2537166381220} is an apocalyptic number.

2537166381220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2537166381220 is an abundant number, since it is smaller than the sum of its proper divisors (2845322384588).

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

2537166381220 is a wasteful number, since it uses less digits than its factorization.

2537166381220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393760 (or 393758 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 2537166381220 in words is "two trillion, five hundred thirty-seven billion, one hundred sixty-six million, three hundred eighty-one thousand, two hundred twenty".