20742654532766 has 32 divisors (see below), whose sum is σ = 31755533846400. Its totient is φ = 10159223104800.

The previous prime is 20742654532763. The next prime is 20742654532771. The reversal of 20742654532766 is 66723545624702.

It is a super-2 number, since 2×20742654532766² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20742654532763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 358226885 + ... + 358284783.

It is an arithmetic number, because the mean of its divisors is an integer number (992360432700).

Almost surely, 2^{20742654532766} is an apocalyptic number.

20742654532766 is a deficient number, since it is larger than the sum of its proper divisors (11012879313634).

20742654532766 is a wasteful number, since it uses less digits than its factorization.

20742654532766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72920.

The product of its (nonzero) digits is 101606400, while the sum is 59.

The spelling of 20742654532766 in words is "twenty trillion, seven hundred forty-two billion, six hundred fifty-four million, five hundred thirty-two thousand, seven hundred sixty-six".