20276480291 has 4 divisors (see below), whose sum is σ = 20276829792. Its totient is φ = 20276130792.

The previous prime is 20276480233. The next prime is 20276480303. The reversal of 20276480291 is 19208467202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20276480291 is a prime.

It is a super-2 number, since 2×20276480291² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20276488291) 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, 64571 + ... + 211476.

It is an arithmetic number, because the mean of its divisors is an integer number (5069207448).

Almost surely, 2^20276480291 is an apocalyptic number.

20276480291 is a deficient number, since it is larger than the sum of its proper divisors (349501).

20276480291 is an equidigital number, since it uses as much as digits as its factorization.

20276480291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349500.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 20276480291 in words is "twenty billion, two hundred seventy-six million, four hundred eighty thousand, two hundred ninety-one".