2151704711220 has 96 divisors (see below), whose sum is σ = 6560551670400. Its totient is φ = 524844117504.

The previous prime is 2151704711209. The next prime is 2151704711279. The reversal of 2151704711220 is 221174071512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32509359 + ... + 32575478.

It is an arithmetic number, because the mean of its divisors is an integer number (68339079900).

Almost surely, 2^{2151704711220} is an apocalyptic number.

2151704711220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151704711220 is an abundant number, since it is smaller than the sum of its proper divisors (4408846959180).

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

2151704711220 is a wasteful number, since it uses less digits than its factorization.

2151704711220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65084897 (or 65084895 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 33.

Adding to 2151704711220 its reverse (221174071512), we get a palindrome (2372878782732).

The spelling of 2151704711220 in words is "two trillion, one hundred fifty-one billion, seven hundred four million, seven hundred eleven thousand, two hundred twenty".