86726905506 has 48 divisors (see below), whose sum is σ = 206398146240. Its totient is φ = 26196683040.

The previous prime is 86726905501. The next prime is 86726905541. The reversal of 86726905506 is 60550962768.

It is a happy number.

86726905506 is a `hidden beast` number, since 8 + 6 + 72 + 69 + 0 + 5 + 506 = 666.

It is a super-2 number, since 2×86726905506² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86726905501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5504905 + ... + 5520636.

It is an arithmetic number, because the mean of its divisors is an integer number (4299961380).

Almost surely, 2^86726905506 is an apocalyptic number.

86726905506 is an abundant number, since it is smaller than the sum of its proper divisors (119671240734).

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

86726905506 is a wasteful number, since it uses less digits than its factorization.

86726905506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11025591 (or 11025588 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 86726905506 in words is "eighty-six billion, seven hundred twenty-six million, nine hundred five thousand, five hundred six".