78250755503 has 8 divisors (see below), whose sum is σ = 81656088576. Its totient is φ = 74845683000.

The previous prime is 78250755493. The next prime is 78250755509. The reversal of 78250755503 is 30555705287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78250755503 - 2⁶ = 78250755439 is a prime.

It is a super-2 number, since 2×78250755503² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78250755509) 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 7 ways as a sum of consecutive naturals, for example, 784418 + ... + 878528.

It is an arithmetic number, because the mean of its divisors is an integer number (10207011072).

Almost surely, 2^78250755503 is an apocalyptic number.

78250755503 is a deficient number, since it is larger than the sum of its proper divisors (3405333073).

78250755503 is a wasteful number, since it uses less digits than its factorization.

78250755503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130285.

The product of its (nonzero) digits is 1470000, while the sum is 47.

The spelling of 78250755503 in words is "seventy-eight billion, two hundred fifty million, seven hundred fifty-five thousand, five hundred three".