78450760247 has 8 divisors (see below), whose sum is σ = 79092277056. Its totient is φ = 77811039072.

The previous prime is 78450760243. The next prime is 78450760249. The reversal of 78450760247 is 74206705487.

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 78450760247 - 2² = 78450760243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78450760195 and 78450760204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78450760243) 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, 361103 + ... + 536000.

It is an arithmetic number, because the mean of its divisors is an integer number (9886534632).

Almost surely, 2^78450760247 is an apocalyptic number.

78450760247 is a deficient number, since it is larger than the sum of its proper divisors (641516809).

78450760247 is a wasteful number, since it uses less digits than its factorization.

78450760247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897817.

The product of its (nonzero) digits is 2634240, while the sum is 50.

The spelling of 78450760247 in words is "seventy-eight billion, four hundred fifty million, seven hundred sixty thousand, two hundred forty-seven".