2151156045560 has 128 divisors (see below), whose sum is σ = 5326584883200. Its totient is φ = 778232632320.

The previous prime is 2151156045473. The next prime is 2151156045607. The reversal of 2151156045560 is 655406511512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8988977 + ... + 9225183.

It is an arithmetic number, because the mean of its divisors is an integer number (41613944400).

Almost surely, 2^{2151156045560} is an apocalyptic number.

2151156045560 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 2151156045560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2663292441600).

2151156045560 is an abundant number, since it is smaller than the sum of its proper divisors (3175428837640).

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

2151156045560 is a wasteful number, since it uses less digits than its factorization.

2151156045560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236781 (or 236777 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 41.

The spelling of 2151156045560 in words is "two trillion, one hundred fifty-one billion, one hundred fifty-six million, forty-five thousand, five hundred sixty".