2153464689920 has 54 divisors (see below), whose sum is σ = 5158346651262. Its totient is φ = 861364875264.

The previous prime is 2153464689917. The next prime is 2153464690009. The reversal of 2153464689920 is 299864643512.

It can be written as a sum of positive squares in 3 ways, for example, as 682619659264 + 1470845030656 = 826208^2 + 1212784^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2153464689920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52481252 + ... + 52522268.

Almost surely, 2^{2153464689920} is an apocalyptic number.

2153464689920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2153464689920 is an abundant number, since it is smaller than the sum of its proper divisors (3004881961342).

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

2153464689920 is an frugal number, since it uses more digits than its factorization.

2153464689920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82055 (or 41024 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 59.

The spelling of 2153464689920 in words is "two trillion, one hundred fifty-three billion, four hundred sixty-four million, six hundred eighty-nine thousand, nine hundred twenty".