78379635428 has 36 divisors (see below), whose sum is σ = 145116453888. Its totient is φ = 36972175680.

The previous prime is 78379635427. The next prime is 78379635469. The reversal of 78379635428 is 82453697387.

It is a super-2 number, since 2×78379635428² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78379635427) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 410333 + ... + 570203.

It is an arithmetic number, because the mean of its divisors is an integer number (4031012608).

Almost surely, 2^78379635428 is an apocalyptic number.

It is an amenable number.

78379635428 is a deficient number, since it is larger than the sum of its proper divisors (66736818460).

78379635428 is a wasteful number, since it uses less digits than its factorization.

78379635428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160044 (or 159969 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 62.

The spelling of 78379635428 in words is "seventy-eight billion, three hundred seventy-nine million, six hundred thirty-five thousand, four hundred twenty-eight".