72142936446 has 16 divisors (see below), whose sum is σ = 164898140544. Its totient is φ = 20612267544.

The previous prime is 72142936423. The next prime is 72142936451. The reversal of 72142936446 is 64463924127.

It is a super-2 number, since 2×72142936446² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72142936395 and 72142936404.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 858844440 + ... + 858844523.

It is an arithmetic number, because the mean of its divisors is an integer number (10306133784).

Almost surely, 2^72142936446 is an apocalyptic number.

72142936446 is an abundant number, since it is smaller than the sum of its proper divisors (92755204098).

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

72142936446 is a wasteful number, since it uses less digits than its factorization.

72142936446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717688975.

The product of its digits is 1741824, while the sum is 48.

The spelling of 72142936446 in words is "seventy-two billion, one hundred forty-two million, nine hundred thirty-six thousand, four hundred forty-six".