86450727738 has 32 divisors (see below), whose sum is σ = 182338079040. Its totient is φ = 27249747840.

The previous prime is 86450727731. The next prime is 86450727749. The reversal of 86450727738 is 83772705468.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86450727731) 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, 639195 + ... + 762542.

It is an arithmetic number, because the mean of its divisors is an integer number (5698064970).

Almost surely, 2^86450727738 is an apocalyptic number.

86450727738 is an abundant number, since it is smaller than the sum of its proper divisors (95887351302).

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

86450727738 is a wasteful number, since it uses less digits than its factorization.

86450727738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402302.

The product of its (nonzero) digits is 15805440, while the sum is 57.

The spelling of 86450727738 in words is "eighty-six billion, four hundred fifty million, seven hundred twenty-seven thousand, seven hundred thirty-eight".