421772277108 has 144 divisors (see below), whose sum is σ = 1234917487104. Its totient is φ = 111052166400.

The previous prime is 421772277107. The next prime is 421772277161. The reversal of 421772277108 is 801772277124.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421772277103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4594458 + ... + 4685358.

Almost surely, 2^421772277108 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421772277108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (617458743552).

421772277108 is an abundant number, since it is smaller than the sum of its proper divisors (813145209996).

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

421772277108 is a wasteful number, since it uses less digits than its factorization.

421772277108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91542 (or 91533 counting only the distinct ones).

The product of its (nonzero) digits is 614656, while the sum is 48.

The spelling of 421772277108 in words is "four hundred twenty-one billion, seven hundred seventy-two million, two hundred seventy-seven thousand, one hundred eight".