220919692050 has 54 divisors (see below), whose sum is σ = 593564361663. Its totient is φ = 58909259040.

The previous prime is 220919692001. The next prime is 220919692061. The reversal of 220919692050 is 50296919022.

It can be written as a sum of positive squares in 5 ways, for example, as 163677694041 + 57241998009 = 404571^2 + 239253^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=332355.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 220919691987 and 220919692005.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 9959572 + ... + 9981728.

Almost surely, 2^220919692050 is an apocalyptic number.

220919692050 is an abundant number, since it is smaller than the sum of its proper divisors (372644669613).

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

220919692050 is an frugal number, since it uses more digits than its factorization.

220919692050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44332 (or 22167 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The spelling of 220919692050 in words is "two hundred twenty billion, nine hundred nineteen million, six hundred ninety-two thousand, fifty".