78275909253 has 8 divisors (see below), whose sum is σ = 104390749888. Its totient is φ = 52172504064.

The previous prime is 78275909237. The next prime is 78275909321. The reversal of 78275909253 is 35290957287.

It is a happy number.

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

It is not a de Polignac number, because 78275909253 - 2⁴ = 78275909237 is a prime.

It is a super-2 number, since 2×78275909253² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78275909193 and 78275909202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78275909353) 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, 2842876 + ... + 2870277.

It is an arithmetic number, because the mean of its divisors is an integer number (13048843736).

Almost surely, 2^78275909253 is an apocalyptic number.

It is an amenable number.

78275909253 is a deficient number, since it is larger than the sum of its proper divisors (26114840635).

78275909253 is a wasteful number, since it uses less digits than its factorization.

78275909253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5717723.

The product of its (nonzero) digits is 9525600, while the sum is 57.

The spelling of 78275909253 in words is "seventy-eight billion, two hundred seventy-five million, nine hundred nine thousand, two hundred fifty-three".