86278487824 has 15 divisors (see below), whose sum is σ = 167166846613. Its totient is φ = 43138656448.

The previous prime is 86278487797. The next prime is 86278487843. The reversal of 86278487824 is 42878487268.

The square root of 86278487824 is 293732.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 14042250000 + 72236237824 = 118500^2 + 268768^2 .

It is a super-2 number, since 2×86278487824² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1138212 + ... + 1211644.

Almost surely, 2^86278487824 is an apocalyptic number.

86278487824 is the 293732-nd square number.

It is an amenable number.

86278487824 is a deficient number, since it is larger than the sum of its proper divisors (80888358789).

86278487824 is an frugal number, since it uses more digits than its factorization.

86278487824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146874 (or 73435 counting only the distinct ones).

The product of its digits is 77070336, while the sum is 64.

Multiplying 86278487824 by its sum of digits (64), we get a square (5521823220736 = 2349856²).

The spelling of 86278487824 in words is "eighty-six billion, two hundred seventy-eight million, four hundred eighty-seven thousand, eight hundred twenty-four".