87722537221699 has 2 divisors, whose sum is σ = 87722537221700. Its totient is φ = 87722537221698.

The previous prime is 87722537221687. The next prime is 87722537221771. The reversal of 87722537221699 is 99612273522778.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87722537221699 - 2¹⁵ = 87722537188931 is a prime.

It is a super-2 number, since 2×87722537221699² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87722537221619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43861268610849 + 43861268610850.

It is an arithmetic number, because the mean of its divisors is an integer number (43861268610850).

Almost surely, 2^{87722537221699} is an apocalyptic number.

87722537221699 is a deficient number, since it is larger than the sum of its proper divisors (1).

87722537221699 is an equidigital number, since it uses as much as digits as its factorization.

87722537221699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 320060160, while the sum is 70.

The spelling of 87722537221699 in words is "eighty-seven trillion, seven hundred twenty-two billion, five hundred thirty-seven million, two hundred twenty-one thousand, six hundred ninety-nine".