78558621253 has 8 divisors (see below), whose sum is σ = 91971069120. Its totient is φ = 65693620320.

The previous prime is 78558621247. The next prime is 78558621289. The reversal of 78558621253 is 35212685587.

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 78558621253 - 2⁹ = 78558620741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78558621253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78558621353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136861423 + ... + 136861996.

It is an arithmetic number, because the mean of its divisors is an integer number (11496383640).

Almost surely, 2^78558621253 is an apocalyptic number.

It is an amenable number.

78558621253 is a deficient number, since it is larger than the sum of its proper divisors (13412447867).

78558621253 is a wasteful number, since it uses less digits than its factorization.

78558621253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273723467.

The product of its digits is 4032000, while the sum is 52.

The spelling of 78558621253 in words is "seventy-eight billion, five hundred fifty-eight million, six hundred twenty-one thousand, two hundred fifty-three".