72789517390 has 16 divisors (see below), whose sum is σ = 131088391200. Its totient is φ = 29100860320.

The previous prime is 72789517379. The next prime is 72789517453. The reversal of 72789517390 is 9371598727.

It is a super-2 number, since 2×72789517390² (a number of 23 digits) contains 22 as substring.

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, 1847866 + ... + 1886845.

It is an arithmetic number, because the mean of its divisors is an integer number (8193024450).

Almost surely, 2^72789517390 is an apocalyptic number.

72789517390 is a deficient number, since it is larger than the sum of its proper divisors (58298873810).

72789517390 is a wasteful number, since it uses less digits than its factorization.

72789517390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3736667.

The product of its (nonzero) digits is 6667920, while the sum is 58.

The spelling of 72789517390 in words is "seventy-two billion, seven hundred eighty-nine million, five hundred seventeen thousand, three hundred ninety".