20023555065731 has 16 divisors (see below), whose sum is σ = 24095003573760. Its totient is φ = 16255330439040.

The previous prime is 20023555065671. The next prime is 20023555065737. The reversal of 20023555065731 is 13756055532002.

It is not a de Polignac number, because 20023555065731 - 2³⁴ = 20006375196547 is a prime.

It is a super-2 number, since 2×20023555065731² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20023555065737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19869815 + ... + 20853216.

It is an arithmetic number, because the mean of its divisors is an integer number (1505937723360).

Almost surely, 2^{20023555065731} is an apocalyptic number.

20023555065731 is a deficient number, since it is larger than the sum of its proper divisors (4071448508029).

20023555065731 is a wasteful number, since it uses less digits than its factorization.

20023555065731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40726754.

The product of its (nonzero) digits is 945000, while the sum is 44.

The spelling of 20023555065731 in words is "twenty trillion, twenty-three billion, five hundred fifty-five million, sixty-five thousand, seven hundred thirty-one".