20099052251587 has 2 divisors, whose sum is σ = 20099052251588. Its totient is φ = 20099052251586.

The previous prime is 20099052251561. The next prime is 20099052251609. The reversal of 20099052251587 is 78515225099002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20099052251587 is a prime.

It is not a weakly prime, because it can be changed into another prime (20099052251507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10049526125793 + 10049526125794.

It is an arithmetic number, because the mean of its divisors is an integer number (10049526125794).

Almost surely, 2^{20099052251587} is an apocalyptic number.

20099052251587 is a deficient number, since it is larger than the sum of its proper divisors (1).

20099052251587 is an equidigital number, since it uses as much as digits as its factorization.

20099052251587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536000, while the sum is 55.

The spelling of 20099052251587 in words is "twenty trillion, ninety-nine billion, fifty-two million, two hundred fifty-one thousand, five hundred eighty-seven".