20701941645 has 64 divisors (see below), whose sum is σ = 42139238400. Its totient is φ = 8603380800.

The previous prime is 20701941613. The next prime is 20701941691. The reversal of 20701941645 is 54614910702.

It is not a de Polignac number, because 20701941645 - 2⁵ = 20701941613 is a prime.

It is a super-3 number, since 3×20701941645³ (a number of 32 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 126301 + ... + 239490.

It is an arithmetic number, because the mean of its divisors is an integer number (658425600).

Almost surely, 2^20701941645 is an apocalyptic number.

It is an amenable number.

20701941645 is an abundant number, since it is smaller than the sum of its proper divisors (21437296755).

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

20701941645 is a wasteful number, since it uses less digits than its factorization.

20701941645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365831 (or 365817 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 20701941645 in words is "twenty billion, seven hundred one million, nine hundred forty-one thousand, six hundred forty-five".