68404149364 has 24 divisors (see below), whose sum is σ = 127026272520. Its totient is φ = 32119735296.

The previous prime is 68404149361. The next prime is 68404149379. The reversal of 68404149364 is 46394140486.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21445259364 + 46958890000 = 146442^2 + 216700^2 .

It is a hoax number, since the sum of its digits (49) 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 (68404149361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1069519 + ... + 1131670.

It is an arithmetic number, because the mean of its divisors is an integer number (5292761355).

Almost surely, 2^68404149364 is an apocalyptic number.

It is an amenable number.

68404149364 is a deficient number, since it is larger than the sum of its proper divisors (58622123156).

68404149364 is a wasteful number, since it uses less digits than its factorization.

68404149364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201667 (or 2201665 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 49.

The spelling of 68404149364 in words is "sixty-eight billion, four hundred four million, one hundred forty-nine thousand, three hundred sixty-four".