20046996287 has 4 divisors (see below), whose sum is σ = 20067390960. Its totient is φ = 20026601616.

The previous prime is 20046996239. The next prime is 20046996317. The reversal of 20046996287 is 78269964002.

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

It is a cyclic number.

It is not a de Polignac number, because 20046996287 - 2⁸ = 20046996031 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 (20046996217) 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, 10195862 + ... + 10197827.

It is an arithmetic number, because the mean of its divisors is an integer number (5016847740).

Almost surely, 2^20046996287 is an apocalyptic number.

20046996287 is a deficient number, since it is larger than the sum of its proper divisors (20394673).

20046996287 is an equidigital number, since it uses as much as digits as its factorization.

20046996287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20394672.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 20046996287 in words is "twenty billion, forty-six million, nine hundred ninety-six thousand, two hundred eighty-seven".