86009437778 has 32 divisors (see below), whose sum is σ = 145642536000. Its totient is φ = 37735001920.

The previous prime is 86009437757. The next prime is 86009437817. The reversal of 86009437778 is 87773490068.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2142293 + ... + 2182071.

It is an arithmetic number, because the mean of its divisors is an integer number (4551329250).

Almost surely, 2^86009437778 is an apocalyptic number.

86009437778 is a deficient number, since it is larger than the sum of its proper divisors (59633098222).

86009437778 is a wasteful number, since it uses less digits than its factorization.

86009437778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43210.

The product of its (nonzero) digits is 14224896, while the sum is 59.

The spelling of 86009437778 in words is "eighty-six billion, nine million, four hundred thirty-seven thousand, seven hundred seventy-eight".