2151532311620 has 24 divisors (see below), whose sum is σ = 4518306007488. Its totient is φ = 860596133600.

The previous prime is 2151532311619. The next prime is 2151532311647. The reversal of 2151532311620 is 261132351512.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28265 + ... + 2074575.

It is an arithmetic number, because the mean of its divisors is an integer number (188262750312).

Almost surely, 2^{2151532311620} is an apocalyptic number.

2151532311620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151532311620 is an abundant number, since it is smaller than the sum of its proper divisors (2366773695868).

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

2151532311620 is a wasteful number, since it uses less digits than its factorization.

2151532311620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098891 (or 2098889 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 2151532311620 in words is "two trillion, one hundred fifty-one billion, five hundred thirty-two million, three hundred eleven thousand, six hundred twenty".