20275091699 has 2 divisors, whose sum is σ = 20275091700. Its totient is φ = 20275091698.

The previous prime is 20275091693. The next prime is 20275091737. The reversal of 20275091699 is 99619057202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20275091699 - 2²⁰ = 20274043123 is a prime.

It is a super-2 number, since 2×20275091699² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20275091693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10137545849 + 10137545850.

It is an arithmetic number, because the mean of its divisors is an integer number (10137545850).

Almost surely, 2^20275091699 is an apocalyptic number.

20275091699 is a deficient number, since it is larger than the sum of its proper divisors (1).

20275091699 is an equidigital number, since it uses as much as digits as its factorization.

20275091699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 612360, while the sum is 50.

The spelling of 20275091699 in words is "twenty billion, two hundred seventy-five million, ninety-one thousand, six hundred ninety-nine".