78145353948 has 24 divisors (see below), whose sum is σ = 184907318400. Its totient is φ = 25681571440.

The previous prime is 78145353931. The next prime is 78145353983. The reversal of 78145353948 is 84935354187.

It is a super-2 number, since 2×78145353948² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 45859098 + ... + 45860801.

It is an arithmetic number, because the mean of its divisors is an integer number (7704471600).

Almost surely, 2^78145353948 is an apocalyptic number.

It is an amenable number.

78145353948 is an abundant number, since it is smaller than the sum of its proper divisors (106761964452).

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

78145353948 is a wasteful number, since it uses less digits than its factorization.

78145353948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91719977 (or 91719975 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 57.

The spelling of 78145353948 in words is "seventy-eight billion, one hundred forty-five million, three hundred fifty-three thousand, nine hundred forty-eight".