2151043001520 has 320 divisors, whose sum is σ = 7901067632640. Its totient is φ = 473726361600.

The previous prime is 2151043001483. The next prime is 2151043001533. The reversal of 2151043001520 is 251003401512.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11836140 + ... + 12016500.

It is an arithmetic number, because the mean of its divisors is an integer number (24690836352).

Almost surely, 2^{2151043001520} is an apocalyptic number.

2151043001520 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 2151043001520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3950533816320).

2151043001520 is an abundant number, since it is smaller than the sum of its proper divisors (5750024631120).

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

2151043001520 is a wasteful number, since it uses less digits than its factorization.

2151043001520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180644 (or 180638 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The spelling of 2151043001520 in words is "two trillion, one hundred fifty-one billion, forty-three million, one thousand, five hundred twenty".