78507011617026 has 16 divisors (see below), whose sum is σ = 157014111292128. Its totient is φ = 26168989196000.

The previous prime is 78507011617003. The next prime is 78507011617057. The reversal of 78507011617026 is 62071611070587.

It is a self number, because there is not a number n which added to its sum of digits gives 78507011617026.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16185301 + ... + 20468951.

It is an arithmetic number, because the mean of its divisors is an integer number (9813381955758).

Almost surely, 2^{78507011617026} is an apocalyptic number.

78507011617026 is an abundant number, since it is smaller than the sum of its proper divisors (78507099675102).

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

78507011617026 is a wasteful number, since it uses less digits than its factorization.

78507011617026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7338177.

The product of its (nonzero) digits is 987840, while the sum is 51.

The spelling of 78507011617026 in words is "seventy-eight trillion, five hundred seven billion, eleven million, six hundred seventeen thousand, twenty-six".