42921444633 has 16 divisors (see below), whose sum is σ = 58585992960. Its totient is φ = 27936198864.

The previous prime is 42921444611. The next prime is 42921444649. The reversal of 42921444633 is 33644412924.

It is a happy number.

42921444633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42921444633 - 2²¹ = 42919347481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42921444133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215178 + ... + 363516.

It is an arithmetic number, because the mean of its divisors is an integer number (3661624560).

Almost surely, 2^42921444633 is an apocalyptic number.

42921444633 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

42921444633 is a deficient number, since it is larger than the sum of its proper divisors (15664548327).

42921444633 is a wasteful number, since it uses less digits than its factorization.

42921444633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150628.

The product of its digits is 497664, while the sum is 42.

The spelling of 42921444633 in words is "forty-two billion, nine hundred twenty-one million, four hundred forty-four thousand, six hundred thirty-three".