78341614387 has 4 divisors (see below), whose sum is σ = 80163512440. Its totient is φ = 76519716336.

The previous prime is 78341614357. The next prime is 78341614411.

78341614387 is nontrivially palindromic in base 10.

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 78341614387 - 2¹⁹ = 78341090099 is a prime.

It is a super-2 number, since 2×78341614387² (a number of 23 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78341614357) 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, 910948962 + ... + 910949047.

It is an arithmetic number, because the mean of its divisors is an integer number (20040878110).

Almost surely, 2^78341614387 is an apocalyptic number.

78341614387 is a deficient number, since it is larger than the sum of its proper divisors (1821898053).

78341614387 is a wasteful number, since it uses less digits than its factorization.

78341614387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821898052.

The product of its digits is 2709504, while the sum is 52.

The spelling of 78341614387 in words is "seventy-eight billion, three hundred forty-one million, six hundred fourteen thousand, three hundred eighty-seven".