2153730539520 has 1680 divisors, whose sum is σ = 9407127034800. Its totient is φ = 470877732864.

The previous prime is 2153730539479. The next prime is 2153730539557. The reversal of 2153730539520 is 259350373512.

2153730539520 is a `hidden beast` number, since 2 + 1 + 5 + 3 + 73 + 0 + 53 + 9 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (1680).

It is a super-2 number, since 2×2153730539520² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 93640458229 + ... + 93640458251.

Almost surely, 2^{2153730539520} is an apocalyptic number.

2153730539520 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 2153730539520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4703563517400).

2153730539520 is an abundant number, since it is smaller than the sum of its proper divisors (7253396495280).

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

2153730539520 is an frugal number, since it uses more digits than its factorization.

2153730539520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 850500, while the sum is 45.

The spelling of 2153730539520 in words is "two trillion, one hundred fifty-three billion, seven hundred thirty million, five hundred thirty-nine thousand, five hundred twenty".