20276165591997 has 8 divisors (see below), whose sum is σ = 30897014235456. Its totient is φ = 11586380338272.

The previous prime is 20276165591959. The next prime is 20276165592019. The reversal of 20276165591997 is 79919556167202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20276165591997 - 2⁶ = 20276165591933 is a prime.

It is a super-2 number, since 2×20276165591997² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20276165591917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482765847408 + ... + 482765847449.

It is an arithmetic number, because the mean of its divisors is an integer number (3862126779432).

Almost surely, 2^{20276165591997} is an apocalyptic number.

It is an amenable number.

20276165591997 is a deficient number, since it is larger than the sum of its proper divisors (10620848643459).

20276165591997 is an equidigital number, since it uses as much as digits as its factorization.

20276165591997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965531694867.

The product of its (nonzero) digits is 128595600, while the sum is 69.

The spelling of 20276165591997 in words is "twenty trillion, two hundred seventy-six billion, one hundred sixty-five million, five hundred ninety-one thousand, nine hundred ninety-seven".