20412388991 has 8 divisors (see below), whose sum is σ = 21359497344. Its totient is φ = 19483320960.

The previous prime is 20412388967. The next prime is 20412389017. The reversal of 20412388991 is 19988321402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20412388991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20412388091) 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, 4507766 + ... + 4512291.

It is an arithmetic number, because the mean of its divisors is an integer number (2669937168).

Almost surely, 2^20412388991 is an apocalyptic number.

20412388991 is a deficient number, since it is larger than the sum of its proper divisors (947108353).

20412388991 is an equidigital number, since it uses as much as digits as its factorization.

20412388991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9020161.

The product of its (nonzero) digits is 248832, while the sum is 47.

The spelling of 20412388991 in words is "twenty billion, four hundred twelve million, three hundred eighty-eight thousand, nine hundred ninety-one".