81764730350 has 24 divisors (see below), whose sum is σ = 152752386168. Its totient is φ = 32561808800.

The previous prime is 81764730343. The next prime is 81764730353. The reversal of 81764730350 is 5303746718.

It is a super-2 number, since 2×81764730350² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81764730353) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3590621 + ... + 3613320.

It is an arithmetic number, because the mean of its divisors is an integer number (6364682757).

Almost surely, 2^81764730350 is an apocalyptic number.

81764730350 is a deficient number, since it is larger than the sum of its proper divisors (70987655818).

81764730350 is a wasteful number, since it uses less digits than its factorization.

81764730350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7204180 (or 7204175 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 81764730350 in words is "eighty-one billion, seven hundred sixty-four million, seven hundred thirty thousand, three hundred fifty".