85415516407 has 16 divisors (see below), whose sum is σ = 92304051840. Its totient is φ = 78572793600.

The previous prime is 85415516393. The next prime is 85415516429. The reversal of 85415516407 is 70461551458.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85415516407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85415516707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6218307 + ... + 6232027.

It is an arithmetic number, because the mean of its divisors is an integer number (5769003240).

Almost surely, 2^85415516407 is an apocalyptic number.

85415516407 is a deficient number, since it is larger than the sum of its proper divisors (6888535433).

85415516407 is a wasteful number, since it uses less digits than its factorization.

85415516407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15354.

The product of its (nonzero) digits is 672000, while the sum is 46.

The spelling of 85415516407 in words is "eighty-five billion, four hundred fifteen million, five hundred sixteen thousand, four hundred seven".