20542404476706 has 128 divisors (see below), whose sum is σ = 49099150786560. Its totient is φ = 5606097868800.

The previous prime is 20542404476687. The next prime is 20542404476749. The reversal of 20542404476706 is 60767440424502.

It is a super-2 number, since 2×20542404476706² (a number of 27 digits) contains 22 as substring.

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, 312346866 + ... + 312412626.

It is an arithmetic number, because the mean of its divisors is an integer number (383587115520).

Almost surely, 2^{20542404476706} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20542404476706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24549575393280).

20542404476706 is an abundant number, since it is smaller than the sum of its proper divisors (28556746309854).

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

20542404476706 is a wasteful number, since it uses less digits than its factorization.

20542404476706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68920.

The product of its (nonzero) digits is 9031680, while the sum is 51.

The spelling of 20542404476706 in words is "twenty trillion, five hundred forty-two billion, four hundred four million, four hundred seventy-six thousand, seven hundred six".