85516737646 has 16 divisors (see below), whose sum is σ = 128578492800. Its totient is φ = 42657350368.

The previous prime is 85516737643. The next prime is 85516737751. The reversal of 85516737646 is 64673761558.

It is a super-2 number, since 2×85516737646² (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 (85516737643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1578435 + ... + 1631713.

It is an arithmetic number, because the mean of its divisors is an integer number (8036155800).

Almost surely, 2^85516737646 is an apocalyptic number.

85516737646 is a deficient number, since it is larger than the sum of its proper divisors (43061755154).

85516737646 is a wasteful number, since it uses less digits than its factorization.

85516737646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55163.

The product of its digits is 25401600, while the sum is 58.

The spelling of 85516737646 in words is "eighty-five billion, five hundred sixteen million, seven hundred thirty-seven thousand, six hundred forty-six".