20769887453 has 16 divisors (see below), whose sum is σ = 24276049920. Its totient is φ = 17399546736.

The previous prime is 20769887423. The next prime is 20769887459. The reversal of 20769887453 is 35478896702.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20769887453 - 2⁶ = 20769887389 is a prime.

It is a super-3 number, since 3×20769887453³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20769887392 and 20769887401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20769887459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192650 + ... + 280452.

It is an arithmetic number, because the mean of its divisors is an integer number (1517253120).

Almost surely, 2^20769887453 is an apocalyptic number.

It is an amenable number.

20769887453 is a deficient number, since it is larger than the sum of its proper divisors (3506162467).

20769887453 is an equidigital number, since it uses as much as digits as its factorization.

20769887453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88576.

The product of its (nonzero) digits is 20321280, while the sum is 59.

The spelling of 20769887453 in words is "twenty billion, seven hundred sixty-nine million, eight hundred eighty-seven thousand, four hundred fifty-three".