20356752877469 has 12 divisors (see below), whose sum is σ = 20714358782016. Its totient is φ = 20004539230368.

The previous prime is 20356752877457. The next prime is 20356752877471. The reversal of 20356752877469 is 96477825765302.

It is not a de Polignac number, because 20356752877469 - 2¹⁶ = 20356752811933 is a prime.

It is a super-2 number, since 2×20356752877469² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20356752877169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6592229 + ... + 9174474.

It is an arithmetic number, because the mean of its divisors is an integer number (1726196565168).

Almost surely, 2^{20356752877469} is an apocalyptic number.

It is an amenable number.

20356752877469 is a deficient number, since it is larger than the sum of its proper divisors (357605904547).

20356752877469 is an equidigital number, since it uses as much as digits as its factorization.

20356752877469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15767044 (or 15766955 counting only the distinct ones).

The product of its (nonzero) digits is 1066867200, while the sum is 71.

The spelling of 20356752877469 in words is "twenty trillion, three hundred fifty-six billion, seven hundred fifty-two million, eight hundred seventy-seven thousand, four hundred sixty-nine".