78203656358125 has 40 divisors (see below), whose sum is σ = 98216546519520. Its totient is φ = 62247491880000.

The previous prime is 78203656358029. The next prime is 78203656358131. The reversal of 78203656358125 is 52185365630287.

It is not a de Polignac number, because 78203656358125 - 2¹⁵ = 78203656325357 is a prime.

It is a super-2 number, since 2×78203656358125² (a number of 29 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

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 39 ways as a sum of consecutive naturals, for example, 222710191 + ... + 223061059.

It is an arithmetic number, because the mean of its divisors is an integer number (2455413662988).

Almost surely, 2^{78203656358125} is an apocalyptic number.

It is an amenable number.

78203656358125 is a deficient number, since it is larger than the sum of its proper divisors (20012890161395).

78203656358125 is a wasteful number, since it uses less digits than its factorization.

78203656358125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352687 (or 352672 counting only the distinct ones).

The product of its (nonzero) digits is 72576000, while the sum is 61.

The spelling of 78203656358125 in words is "seventy-eight trillion, two hundred three billion, six hundred fifty-six million, three hundred fifty-eight thousand, one hundred twenty-five".