86541378450 has 24 divisors (see below), whose sum is σ = 214622618928. Its totient is φ = 23077700880.

The previous prime is 86541378419. The next prime is 86541378461. The reversal of 86541378450 is 5487314568.

It is a super-2 number, since 2×86541378450² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 86541378393 and 86541378402.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 288471112 + ... + 288471411.

It is an arithmetic number, because the mean of its divisors is an integer number (8942609122).

Almost surely, 2^86541378450 is an apocalyptic number.

86541378450 is an abundant number, since it is smaller than the sum of its proper divisors (128081240478).

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

86541378450 is a wasteful number, since it uses less digits than its factorization.

86541378450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576942538 (or 576942533 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 86541378450 in words is "eighty-six billion, five hundred forty-one million, three hundred seventy-eight thousand, four hundred fifty".