21157142530360 has 64 divisors (see below), whose sum is σ = 47687618008800. Its totient is φ = 8447928354816.

The previous prime is 21157142530327. The next prime is 21157142530369. The reversal of 21157142530360 is 6303524175112.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21157142530369) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 51818532 + ... + 52225228.

Almost surely, 2^{21157142530360} is an apocalyptic number.

21157142530360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21157142530360 is an abundant number, since it is smaller than the sum of its proper divisors (26530475478440).

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

21157142530360 is a wasteful number, since it uses less digits than its factorization.

21157142530360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409000 (or 408996 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 21157142530360 in words is "twenty-one trillion, one hundred fifty-seven billion, one hundred forty-two million, five hundred thirty thousand, three hundred sixty".