20357269919 has 16 divisors (see below), whose sum is σ = 23651788800. Its totient is φ = 17161058304.

The previous prime is 20357269897. The next prime is 20357269927. The reversal of 20357269919 is 91996275302.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20357269919 is a prime.

It is a super-2 number, since 2×20357269919² (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 (20357269619) 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, 70502 + ... + 213740.

It is an arithmetic number, because the mean of its divisors is an integer number (1478236800).

Almost surely, 2^20357269919 is an apocalyptic number.

20357269919 is a deficient number, since it is larger than the sum of its proper divisors (3294518881).

20357269919 is a wasteful number, since it uses less digits than its factorization.

20357269919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143582.

The product of its (nonzero) digits is 1837080, while the sum is 53.

The spelling of 20357269919 in words is "twenty billion, three hundred fifty-seven million, two hundred sixty-nine thousand, nine hundred nineteen".