86724042494 has 8 divisors (see below), whose sum is σ = 130207756440. Its totient is φ = 43321457016.

The previous prime is 86724042487. The next prime is 86724042497. The reversal of 86724042494 is 49424042768.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×86724042494² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86724042497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20279444 + ... + 20283719.

It is an arithmetic number, because the mean of its divisors is an integer number (16275969555).

Almost surely, 2^86724042494 is an apocalyptic number.

86724042494 is a deficient number, since it is larger than the sum of its proper divisors (43483713946).

86724042494 is a wasteful number, since it uses less digits than its factorization.

86724042494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40564234.

The product of its (nonzero) digits is 3096576, while the sum is 50.

The spelling of 86724042494 in words is "eighty-six billion, seven hundred twenty-four million, forty-two thousand, four hundred ninety-four".