87722098811 has 16 divisors (see below), whose sum is σ = 95575334400. Its totient is φ = 80195623200.

The previous prime is 87722098781. The next prime is 87722098823. The reversal of 87722098811 is 11889022778.

It is a cyclic number.

It is not a de Polignac number, because 87722098811 - 2²² = 87717904507 is a prime.

It is a super-2 number, since 2×87722098811² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87722098861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 988376 + ... + 1073466.

It is an arithmetic number, because the mean of its divisors is an integer number (5973458400).

Almost surely, 2^87722098811 is an apocalyptic number.

87722098811 is a deficient number, since it is larger than the sum of its proper divisors (7853235589).

87722098811 is a wasteful number, since it uses less digits than its factorization.

87722098811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87010.

The product of its (nonzero) digits is 903168, while the sum is 53.

The spelling of 87722098811 in words is "eighty-seven billion, seven hundred twenty-two million, ninety-eight thousand, eight hundred eleven".