20228892487 has 2 divisors, whose sum is σ = 20228892488. Its totient is φ = 20228892486.

The previous prime is 20228892443. The next prime is 20228892533. The reversal of 20228892487 is 78429882202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20228892487 - 2¹⁵ = 20228859719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20228802487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10114446243 + 10114446244.

It is an arithmetic number, because the mean of its divisors is an integer number (10114446244).

Almost surely, 2^20228892487 is an apocalyptic number.

20228892487 is a deficient number, since it is larger than the sum of its proper divisors (1).

20228892487 is an equidigital number, since it uses as much as digits as its factorization.

20228892487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2064384, while the sum is 52.

The spelling of 20228892487 in words is "twenty billion, two hundred twenty-eight million, eight hundred ninety-two thousand, four hundred eighty-seven".