20080207491 has 8 divisors (see below), whose sum is σ = 26937865920. Its totient is φ = 13304677032.

The previous prime is 20080207489. The next prime is 20080207493. The reversal of 20080207491 is 19470208002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20080207489) and next prime (20080207493).

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

It is not a de Polignac number, because 20080207491 - 2¹ = 20080207489 is a prime.

It is a super-2 number, since 2×20080207491² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20080207493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20531421 + ... + 20532398.

It is an arithmetic number, because the mean of its divisors is an integer number (3367233240).

Almost surely, 2^20080207491 is an apocalyptic number.

20080207491 is a deficient number, since it is larger than the sum of its proper divisors (6857658429).

20080207491 is a wasteful number, since it uses less digits than its factorization.

20080207491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41063985.

The product of its (nonzero) digits is 8064, while the sum is 33.

The spelling of 20080207491 in words is "twenty billion, eighty million, two hundred seven thousand, four hundred ninety-one".