20066354739 has 6 divisors (see below), whose sum is σ = 28984734636. Its totient is φ = 13377569820.

The previous prime is 20066354729. The next prime is 20066354747. The reversal of 20066354739 is 93745366002.

20066354739 is a `hidden beast` number, since 2 + 0 + 0 + 6 + 635 + 4 + 7 + 3 + 9 = 666.

It is not a de Polignac number, because 20066354739 - 2⁴ = 20066354723 is a prime.

It is a super-2 number, since 2×20066354739² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20066354694 and 20066354703.

It is not an unprimeable number, because it can be changed into a prime (20066354729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1114797477 + ... + 1114797494.

It is an arithmetic number, because the mean of its divisors is an integer number (4830789106).

Almost surely, 2^20066354739 is an apocalyptic number.

20066354739 is a deficient number, since it is larger than the sum of its proper divisors (8918379897).

20066354739 is a wasteful number, since it uses less digits than its factorization.

20066354739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229594977 (or 2229594974 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 45.

The spelling of 20066354739 in words is "twenty billion, sixty-six million, three hundred fifty-four thousand, seven hundred thirty-nine".