78375081347 has 4 divisors (see below), whose sum is σ = 78386419056. Its totient is φ = 78363743640.

The previous prime is 78375081341. The next prime is 78375081371. The reversal of 78375081347 is 74318057387.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78375081347 - 2⁸ = 78375081091 is a prime.

It is a super-2 number, since 2×78375081347² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78375081341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5658479 + ... + 5672312.

It is an arithmetic number, because the mean of its divisors is an integer number (19596604764).

Almost surely, 2^78375081347 is an apocalyptic number.

78375081347 is a deficient number, since it is larger than the sum of its proper divisors (11337709).

78375081347 is a wasteful number, since it uses less digits than its factorization.

78375081347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11337708.

The product of its (nonzero) digits is 3951360, while the sum is 53.

The spelling of 78375081347 in words is "seventy-eight billion, three hundred seventy-five million, eighty-one thousand, three hundred forty-seven".