220019974687 has 2 divisors, whose sum is σ = 220019974688. Its totient is φ = 220019974686.

The previous prime is 220019974663. The next prime is 220019974747. The reversal of 220019974687 is 786479910022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220019974687 - 2²³ = 220011586079 is a prime.

It is a super-2 number, since 2×220019974687² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220019974087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110009987343 + 110009987344.

It is an arithmetic number, because the mean of its divisors is an integer number (110009987344).

Almost surely, 2^220019974687 is an apocalyptic number.

220019974687 is a deficient number, since it is larger than the sum of its proper divisors (1).

220019974687 is an equidigital number, since it uses as much as digits as its factorization.

220019974687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The spelling of 220019974687 in words is "two hundred twenty billion, nineteen million, nine hundred seventy-four thousand, six hundred eighty-seven".