85423551810 has 64 divisors (see below), whose sum is σ = 215243025408. Its totient is φ = 21655491264.

The previous prime is 85423551803. The next prime is 85423551817. The reversal of 85423551810 is 1815532458.

It is an interprime number because it is at equal distance from previous prime (85423551803) and next prime (85423551817).

It is a super-2 number, since 2×85423551810² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85423551817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 267292 + ... + 492231.

It is an arithmetic number, because the mean of its divisors is an integer number (3363172272).

Almost surely, 2^85423551810 is an apocalyptic number.

85423551810 is an abundant number, since it is smaller than the sum of its proper divisors (129819473598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85423551810 is a wasteful number, since it uses less digits than its factorization.

85423551810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759719.

The product of its (nonzero) digits is 192000, while the sum is 42.

The spelling of 85423551810 in words is "eighty-five billion, four hundred twenty-three million, five hundred fifty-one thousand, eight hundred ten".