20701185720740 has 96 divisors (see below), whose sum is σ = 52126265038848. Its totient is φ = 6755996160000.

The previous prime is 20701185720671. The next prime is 20701185720829. The reversal of 20701185720740 is 4702758110702.

It is a happy number.

It is a super-2 number, since 2×20701185720740² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20701185720691 and 20701185720700.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38832461 + ... + 39361940.

It is an arithmetic number, because the mean of its divisors is an integer number (542981927488).

Almost surely, 2^{20701185720740} is an apocalyptic number.

20701185720740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20701185720740 is an abundant number, since it is smaller than the sum of its proper divisors (31425079318108).

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

20701185720740 is a wasteful number, since it uses less digits than its factorization.

20701185720740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78194509 (or 78194507 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 44.

The spelling of 20701185720740 in words is "twenty trillion, seven hundred one billion, one hundred eighty-five million, seven hundred twenty thousand, seven hundred forty".