78146135401072 has 40 divisors (see below), whose sum is σ = 152415710717600. Its totient is φ = 38813826108672.

The previous prime is 78146135401027. The next prime is 78146135401073. The reversal of 78146135401072 is 27010453164187.

It is a super-2 number, since 2×78146135401072² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78146135401073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22683183 + ... + 25900174.

It is an arithmetic number, because the mean of its divisors is an integer number (3810392767940).

Almost surely, 2^{78146135401072} is an apocalyptic number.

It is an amenable number.

78146135401072 is a deficient number, since it is larger than the sum of its proper divisors (74269575316528).

78146135401072 is a wasteful number, since it uses less digits than its factorization.

78146135401072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48584033 (or 48584027 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 78146135401072 in words is "seventy-eight trillion, one hundred forty-six billion, one hundred thirty-five million, four hundred one thousand, seventy-two".