72746244170 has 16 divisors (see below), whose sum is σ = 132414513480. Its totient is φ = 28771547904.

The previous prime is 72746244047. The next prime is 72746244173. The reversal of 72746244170 is 7144264727.

It can be written as a sum of positive squares in 4 ways, for example, as 53716869361 + 19029374809 = 231769^2 + 137947^2 .

It is not an unprimeable number, because it can be changed into a prime (72746244173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40867787 + ... + 40869566.

Almost surely, 2^72746244170 is an apocalyptic number.

72746244170 is a deficient number, since it is larger than the sum of its proper divisors (59668269310).

72746244170 is a wasteful number, since it uses less digits than its factorization.

72746244170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81737449.

The product of its (nonzero) digits is 526848, while the sum is 44.

The spelling of 72746244170 in words is "seventy-two billion, seven hundred forty-six million, two hundred forty-four thousand, one hundred seventy".