2151544512 has 56 divisors (see below), whose sum is σ = 6130529776. Its totient is φ = 662012928.

The previous prime is 2151544471. The next prime is 2151544519. The reversal of 2151544512 is 2154451512.

It is a self number, because there is not a number n which added to its sum of digits gives 2151544512.

It is not an unprimeable number, because it can be changed into a prime (2151544519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428503 + ... + 433494.

It is an arithmetic number, because the mean of its divisors is an integer number (109473746).

Almost surely, 2^2151544512 is an apocalyptic number.

It is an amenable number.

2151544512 is an abundant number, since it is smaller than the sum of its proper divisors (3978985264).

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

2151544512 is a wasteful number, since it uses less digits than its factorization.

2151544512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862025 (or 862015 counting only the distinct ones).

The product of its digits is 8000, while the sum is 30.

The square root of 2151544512 is about 46384.7443886457. The cubic root of 2151544512 is about 1290.9718678289.

The spelling of 2151544512 in words is "two billion, one hundred fifty-one million, five hundred forty-four thousand, five hundred twelve".