42636222772 has 96 divisors (see below), whose sum is σ = 89666519040. Its totient is φ = 17480603520.

The previous prime is 42636222757. The next prime is 42636222779. The reversal of 42636222772 is 27722263624.

It is a super-2 number, since 2×42636222772² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42636222779) 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, 29222179 + ... + 29223637.

It is an arithmetic number, because the mean of its divisors is an integer number (934026240).

Almost surely, 2^42636222772 is an apocalyptic number.

It is an amenable number.

42636222772 is an abundant number, since it is smaller than the sum of its proper divisors (47030296268).

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

42636222772 is a wasteful number, since it uses less digits than its factorization.

42636222772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621 (or 2619 counting only the distinct ones).

The product of its digits is 677376, while the sum is 43.

The spelling of 42636222772 in words is "forty-two billion, six hundred thirty-six million, two hundred twenty-two thousand, seven hundred seventy-two".