78300075508 has 12 divisors (see below), whose sum is σ = 137094596100. Its totient is φ = 39130190912.

The previous prime is 78300075493. The next prime is 78300075523. The reversal of 78300075508 is 80557000387.

It is an interprime number because it is at equal distance from previous prime (78300075493) and next prime (78300075523).

It can be written as a sum of positive squares in 2 ways, for example, as 5465940624 + 72834134884 = 73932^2 + 269878^2 .

It is a super-2 number, since 2×78300075508² (a number of 23 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 3 ways as a sum of consecutive naturals, for example, 4952833 + ... + 4968616.

It is an arithmetic number, because the mean of its divisors is an integer number (11424549675).

Almost surely, 2^78300075508 is an apocalyptic number.

It is an amenable number.

78300075508 is a deficient number, since it is larger than the sum of its proper divisors (58794520592).

78300075508 is a wasteful number, since it uses less digits than its factorization.

78300075508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9923426 (or 9923424 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 43.

The spelling of 78300075508 in words is "seventy-eight billion, three hundred million, seventy-five thousand, five hundred eight".