85537447265 has 16 divisors (see below), whose sum is σ = 109698613632. Its totient is φ = 63802746624.

The previous prime is 85537447253. The next prime is 85537447301. The reversal of 85537447265 is 56274473558.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85537447265 is a prime.

It is a super-2 number, since 2×85537447265² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85537447265.

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, 4693349 + ... + 4711538.

It is an arithmetic number, because the mean of its divisors is an integer number (6856163352).

Almost surely, 2^85537447265 is an apocalyptic number.

85537447265 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

85537447265 is a deficient number, since it is larger than the sum of its proper divisors (24161166367).

85537447265 is a wasteful number, since it uses less digits than its factorization.

85537447265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9405016.

The product of its digits is 28224000, while the sum is 56.

The spelling of 85537447265 in words is "eighty-five billion, five hundred thirty-seven million, four hundred forty-seven thousand, two hundred sixty-five".