2137791353220 has 144 divisors (see below), whose sum is σ = 7122710125440. Its totient is φ = 516592124928.

The previous prime is 2137791353189. The next prime is 2137791353221. The reversal of 2137791353220 is 223531977312.

2137791353220 is a `hidden beast` number, since 2 + 1 + 3 + 7 + 7 + 91 + 3 + 532 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2137791353221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13510149 + ... + 13667468.

It is an arithmetic number, because the mean of its divisors is an integer number (49463264760).

Almost surely, 2^{2137791353220} is an apocalyptic number.

2137791353220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2137791353220 is an abundant number, since it is smaller than the sum of its proper divisors (4984918772220).

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

2137791353220 is a wasteful number, since it uses less digits than its factorization.

2137791353220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27177674 (or 27177669 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 45.

The spelling of 2137791353220 in words is "two trillion, one hundred thirty-seven billion, seven hundred ninety-one million, three hundred fifty-three thousand, two hundred twenty".