72850017290 has 32 divisors (see below), whose sum is σ = 134348956560. Its totient is φ = 28424908800.

The previous prime is 72850017239. The next prime is 72850017353. The reversal of 72850017290 is 9271005827.

It can be written as a sum of positive squares in 8 ways, for example, as 5306685409 + 67543331881 = 72847^2 + 259891^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4390610 + ... + 4407170.

Almost surely, 2^72850017290 is an apocalyptic number.

72850017290 is a deficient number, since it is larger than the sum of its proper divisors (61498939270).

72850017290 is a wasteful number, since it uses less digits than its factorization.

72850017290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27338.

The product of its (nonzero) digits is 70560, while the sum is 41.

The spelling of 72850017290 in words is "seventy-two billion, eight hundred fifty million, seventeen thousand, two hundred ninety".