2153015613640 has 16 divisors (see below), whose sum is σ = 4844285130780. Its totient is φ = 861206245440.

The previous prime is 2153015613611. The next prime is 2153015613659. The reversal of 2153015613640 is 463165103512.

It can be written as a sum of positive squares in 2 ways, for example, as 2150487334116 + 2528279524 = 1466454^2 + 50282^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2153015613640.

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, 26912695131 + ... + 26912695210.

Almost surely, 2^{2153015613640} is an apocalyptic number.

2153015613640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2153015613640 is an abundant number, since it is smaller than the sum of its proper divisors (2691269517140).

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

2153015613640 is a wasteful number, since it uses less digits than its factorization.

2153015613640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53825390352 (or 53825390348 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 2153015613640 in words is "two trillion, one hundred fifty-three billion, fifteen million, six hundred thirteen thousand, six hundred forty".