85687381450 has 24 divisors (see below), whose sum is σ = 173867487840. Its totient is φ = 31159047600.

The previous prime is 85687381393. The next prime is 85687381489. The reversal of 85687381450 is 5418378658.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a junction number, because it is equal to n+sod(n) for n = 85687381391 and 85687381400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77897070 + ... + 77898169.

It is an arithmetic number, because the mean of its divisors is an integer number (7244478660).

Almost surely, 2^85687381450 is an apocalyptic number.

85687381450 is an abundant number, since it is smaller than the sum of its proper divisors (88180106390).

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

85687381450 is a wasteful number, since it uses less digits than its factorization.

85687381450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155795262 (or 155795257 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 55.

The spelling of 85687381450 in words is "eighty-five billion, six hundred eighty-seven million, three hundred eighty-one thousand, four hundred fifty".