2155131225320 has 32 divisors (see below), whose sum is σ = 4917341675520. Its totient is φ = 849910904640.

The previous prime is 2155131225281. The next prime is 2155131225337. The reversal of 2155131225320 is 235221315512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379421672 + ... + 379427351.

It is an arithmetic number, because the mean of its divisors is an integer number (153666927360).

Almost surely, 2^{2155131225320} is an apocalyptic number.

2155131225320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2155131225320 is an abundant number, since it is smaller than the sum of its proper divisors (2762210450200).

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

2155131225320 is a wasteful number, since it uses less digits than its factorization.

2155131225320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758849105 (or 758849101 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 2155131225320 in words is "two trillion, one hundred fifty-five billion, one hundred thirty-one million, two hundred twenty-five thousand, three hundred twenty".