21237069140780 has 24 divisors (see below), whose sum is σ = 45353740879440. Its totient is φ = 8350847526080.

The previous prime is 21237069140773. The next prime is 21237069140863. The reversal of 21237069140780 is 8704196073212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8998756931 + ... + 8998759290.

It is an arithmetic number, because the mean of its divisors is an integer number (1889739203310).

Almost surely, 2^{21237069140780} is an apocalyptic number.

21237069140780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21237069140780 is an abundant number, since it is smaller than the sum of its proper divisors (24116671738660).

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

21237069140780 is a wasteful number, since it uses less digits than its factorization.

21237069140780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17997516289 (or 17997516287 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 21237069140780 in words is "twenty-one trillion, two hundred thirty-seven billion, sixty-nine million, one hundred forty thousand, seven hundred eighty".