20357671453 has 4 divisors (see below), whose sum is σ = 23265910240. Its totient is φ = 17449432668.

The previous prime is 20357671447. The next prime is 20357671483. The reversal of 20357671453 is 35417675302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20357671453 - 2⁹ = 20357670941 is a prime.

It is a super-2 number, since 2×20357671453² (a number of 21 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 (20357671483) 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 3 ways as a sum of consecutive naturals, for example, 1454119383 + ... + 1454119396.

It is an arithmetic number, because the mean of its divisors is an integer number (5816477560).

Almost surely, 2^20357671453 is an apocalyptic number.

It is an amenable number.

20357671453 is a deficient number, since it is larger than the sum of its proper divisors (2908238787).

20357671453 is an equidigital number, since it uses as much as digits as its factorization.

20357671453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2908238786.

The product of its (nonzero) digits is 529200, while the sum is 43.

The spelling of 20357671453 in words is "twenty billion, three hundred fifty-seven million, six hundred seventy-one thousand, four hundred fifty-three".