85408529045 has 18 divisors (see below), whose sum is σ = 119229720246. Its totient is φ = 58562711760.

The previous prime is 85408529021. The next prime is 85408529053. The reversal of 85408529045 is 54092580458.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 68326823236 + 17081705809 = 261394^2 + 130697^2 .

It is not a de Polignac number, because 85408529045 - 2¹⁶ = 85408463509 is a prime.

It is a super-2 number, since 2×85408529045² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85408528984 and 85408529002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4565060 + ... + 4583730.

It is an arithmetic number, because the mean of its divisors is an integer number (6623873347).

Almost surely, 2^85408529045 is an apocalyptic number.

It is an amenable number.

85408529045 is a deficient number, since it is larger than the sum of its proper divisors (33821191201).

85408529045 is an frugal number, since it uses more digits than its factorization.

85408529045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37361 (or 18683 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 50.

The spelling of 85408529045 in words is "eighty-five billion, four hundred eight million, five hundred twenty-nine thousand, forty-five".