21160351015356 has 24 divisors (see below), whose sum is σ = 56427602707840. Its totient is φ = 6045814575792.

The previous prime is 21160351015327. The next prime is 21160351015357. The reversal of 21160351015356 is 65351015306112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21160351015357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125954470246 + ... + 125954470413.

Almost surely, 2^{21160351015356} is an apocalyptic number.

It is an amenable number.

21160351015356 is an abundant number, since it is smaller than the sum of its proper divisors (35267251692484).

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

21160351015356 is a wasteful number, since it uses less digits than its factorization.

21160351015356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251908940673 (or 251908940671 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 39.

The spelling of 21160351015356 in words is "twenty-one trillion, one hundred sixty billion, three hundred fifty-one million, fifteen thousand, three hundred fifty-six".