86687422621890 has 16 divisors (see below), whose sum is σ = 208049814292608. Its totient is φ = 23116646032496.

The previous prime is 86687422621889. The next prime is 86687422621897. The reversal of 86687422621890 is 9812622478668.

It is a super-2 number, since 2×86687422621890² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86687422621897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1444790377002 + ... + 1444790377061.

It is an arithmetic number, because the mean of its divisors is an integer number (13003113393288).

Almost surely, 2^{86687422621890} is an apocalyptic number.

86687422621890 is an abundant number, since it is smaller than the sum of its proper divisors (121362391670718).

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

86687422621890 is a wasteful number, since it uses less digits than its factorization.

86687422621890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889580754073.

The product of its (nonzero) digits is 222953472, while the sum is 69.

The spelling of 86687422621890 in words is "eighty-six trillion, six hundred eighty-seven billion, four hundred twenty-two million, six hundred twenty-one thousand, eight hundred ninety".