72042446744 has 32 divisors (see below), whose sum is σ = 138423939120. Its totient is φ = 35137255296.

The previous prime is 72042446743. The next prime is 72042446747. The reversal of 72042446744 is 44764424027.

It is a super-2 number, since 2×72042446744² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72042446695 and 72042446704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72042446743) 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, 417722 + ... + 564425.

Almost surely, 2^72042446744 is an apocalyptic number.

It is an amenable number.

72042446744 is a deficient number, since it is larger than the sum of its proper divisors (66381492376).

72042446744 is a wasteful number, since it uses less digits than its factorization.

72042446744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982379 (or 982375 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 44.

The spelling of 72042446744 in words is "seventy-two billion, forty-two million, four hundred forty-six thousand, seven hundred forty-four".