2151323455280 has 20 divisors (see below), whose sum is σ = 5001827033712. Its totient is φ = 860529382080.

The previous prime is 2151323455279. The next prime is 2151323455357. The reversal of 2151323455280 is 825543231512.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13445771516 + ... + 13445771675.

Almost surely, 2^{2151323455280} is an apocalyptic number.

2151323455280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151323455280 is an abundant number, since it is smaller than the sum of its proper divisors (2850503578432).

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

2151323455280 is a wasteful number, since it uses less digits than its factorization.

2151323455280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26891543204 (or 26891543198 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 41.

Adding to 2151323455280 its reverse (825543231512), we get a palindrome (2976866686792).

The spelling of 2151323455280 in words is "two trillion, one hundred fifty-one billion, three hundred twenty-three million, four hundred fifty-five thousand, two hundred eighty".