20260209719 has 4 divisors (see below), whose sum is σ = 20262178896. Its totient is φ = 20258240544.

The previous prime is 20260209689. The next prime is 20260209727. The reversal of 20260209719 is 91790206202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91790206202 = 2 ⋅45895103101.

It is a cyclic number.

It is not a de Polignac number, because 20260209719 - 2¹⁶ = 20260144183 is a prime.

It is a super-2 number, since 2×20260209719² (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 (20260709719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 969074 + ... + 989759.

It is an arithmetic number, because the mean of its divisors is an integer number (5065544724).

Almost surely, 2^20260209719 is an apocalyptic number.

20260209719 is a deficient number, since it is larger than the sum of its proper divisors (1969177).

20260209719 is a wasteful number, since it uses less digits than its factorization.

20260209719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969176.

The product of its (nonzero) digits is 27216, while the sum is 38.

The spelling of 20260209719 in words is "twenty billion, two hundred sixty million, two hundred nine thousand, seven hundred nineteen".