85621460220 has 72 divisors (see below), whose sum is σ = 261169468560. Its totient is φ = 22704825600.

The previous prime is 85621460219. The next prime is 85621460257. The reversal of 85621460220 is 2206412658.

It is a happy number.

85621460220 is a `hidden beast` number, since 8 + 5 + 6 + 21 + 4 + 602 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1296481 + ... + 1360920.

It is an arithmetic number, because the mean of its divisors is an integer number (3627353730).

Almost surely, 2^85621460220 is an apocalyptic number.

It is an amenable number.

85621460220 is an abundant number, since it is smaller than the sum of its proper divisors (175548008340).

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

85621460220 is a wasteful number, since it uses less digits than its factorization.

85621460220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2657595 (or 2657590 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

Adding to 85621460220 its reverse (2206412658), we get a palindrome (87827872878).

It can be divided in two parts, 856 and 21460220, that added together give a triangular number (21461076 = T₆₅₅₁).

The spelling of 85621460220 in words is "eighty-five billion, six hundred twenty-one million, four hundred sixty thousand, two hundred twenty".