78146161052838 has 64 divisors (see below), whose sum is σ = 161819010662400. Its totient is φ = 25141703408640.

The previous prime is 78146161052809. The next prime is 78146161052863. The reversal of 78146161052838 is 83825016164187.

It is a super-2 number, since 2×78146161052838² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24037723 + ... + 27094361.

It is an arithmetic number, because the mean of its divisors is an integer number (2528422041600).

Almost surely, 2^{78146161052838} is an apocalyptic number.

78146161052838 is an abundant number, since it is smaller than the sum of its proper divisors (83672849609562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78146161052838 is a wasteful number, since it uses less digits than its factorization.

78146161052838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3057797.

The product of its (nonzero) digits is 15482880, while the sum is 60.

The spelling of 78146161052838 in words is "seventy-eight trillion, one hundred forty-six billion, one hundred sixty-one million, fifty-two thousand, eight hundred thirty-eight".