42744946631 has 8 divisors (see below), whose sum is σ = 44076175920. Its totient is φ = 41433151552.

The previous prime is 42744946561. The next prime is 42744946649. The reversal of 42744946631 is 13664944724.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42744946631 - 2¹⁸ = 42744684487 is a prime.

It is a super-2 number, since 2×42744946631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42744946631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42744946831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4854086 + ... + 4862883.

It is an arithmetic number, because the mean of its divisors is an integer number (5509521990).

Almost surely, 2^42744946631 is an apocalyptic number.

42744946631 is a deficient number, since it is larger than the sum of its proper divisors (1331229289).

42744946631 is an equidigital number, since it uses as much as digits as its factorization.

42744946631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9717105.

The product of its digits is 3483648, while the sum is 50.

The spelling of 42744946631 in words is "forty-two billion, seven hundred forty-four million, nine hundred forty-six thousand, six hundred thirty-one".