2131162445880 has 480 divisors, whose sum is σ = 8141510361600. Its totient is φ = 496980085248.

The previous prime is 2131162445879. The next prime is 2131162445927. The reversal of 2131162445880 is 885442611312.

2131162445880 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 1 + 62 + 4 + 4 + 588 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 15135241 + ... + 15275399.

It is an arithmetic number, because the mean of its divisors is an integer number (16961479920).

Almost surely, 2^{2131162445880} is an apocalyptic number.

2131162445880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131162445880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4070755180800).

2131162445880 is an abundant number, since it is smaller than the sum of its proper divisors (6010347915720).

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

2131162445880 is a wasteful number, since it uses less digits than its factorization.

2131162445880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140233 (or 140201 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 2131162445880 in words is "two trillion, one hundred thirty-one billion, one hundred sixty-two million, four hundred forty-five thousand, eight hundred eighty".