87377884722 has 90 divisors (see below), whose sum is σ = 200877164397. Its totient is φ = 27450047232.

The previous prime is 87377884697. The next prime is 87377884729. The reversal of 87377884722 is 22748877378.

87377884722 is a `hidden beast` number, since 87 + 3 + 7 + 7 + 88 + 472 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 81127559241 + 6250325481 = 284829^2 + 79059^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=209019.

It is a super-2 number, since 2×87377884722² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87377884722.

It is not an unprimeable number, because it can be changed into a prime (87377884729) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 452735058 + ... + 452735250.

Almost surely, 2^87377884722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87377884722

87377884722 is an abundant number, since it is smaller than the sum of its proper divisors (113499279675).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87377884722 is an frugal number, since it uses more digits than its factorization.

87377884722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 217 counting only the distinct ones).

The product of its digits is 59006976, while the sum is 63.

The spelling of 87377884722 in words is "eighty-seven billion, three hundred seventy-seven million, eight hundred eighty-four thousand, seven hundred twenty-two".