20700513066 has 16 divisors (see below), whose sum is σ = 42736543488. Its totient is φ = 6677584800.

The previous prime is 20700513049. The next prime is 20700513089. The reversal of 20700513066 is 66031500702.

It is a super-2 number, since 2×20700513066² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

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, 55646355 + ... + 55646726.

It is an arithmetic number, because the mean of its divisors is an integer number (2671033968).

Almost surely, 2^20700513066 is an apocalyptic number.

20700513066 is an abundant number, since it is smaller than the sum of its proper divisors (22036030422).

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

20700513066 is a wasteful number, since it uses less digits than its factorization.

20700513066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111293117.

The product of its (nonzero) digits is 7560, while the sum is 30.

The spelling of 20700513066 in words is "twenty billion, seven hundred million, five hundred thirteen thousand, sixty-six".