78882037464638 has 32 divisors (see below), whose sum is σ = 125890705336320. Its totient is φ = 37014236028000.

The previous prime is 78882037464599. The next prime is 78882037464641. The reversal of 78882037464638 is 83646473028887.

It is a super-2 number, since 2×78882037464638² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (74) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146613368 + ... + 147150411.

It is an arithmetic number, because the mean of its divisors is an integer number (3934084541760).

Almost surely, 2^{78882037464638} is an apocalyptic number.

78882037464638 is a deficient number, since it is larger than the sum of its proper divisors (47008667871682).

78882037464638 is a wasteful number, since it uses less digits than its factorization.

78882037464638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293763944.

The product of its (nonzero) digits is 2080899072, while the sum is 74.

The spelling of 78882037464638 in words is "seventy-eight trillion, eight hundred eighty-two billion, thirty-seven million, four hundred sixty-four thousand, six hundred thirty-eight".