78377511467 has 4 divisors (see below), whose sum is σ = 82987953336. Its totient is φ = 73767069600.

The previous prime is 78377511437. The next prime is 78377511491. The reversal of 78377511467 is 76411577387.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78377511467 is a prime.

It is a super-2 number, since 2×78377511467² (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 (78377511437) 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, 2305220909 + ... + 2305220942.

It is an arithmetic number, because the mean of its divisors is an integer number (20746988334).

Almost surely, 2^78377511467 is an apocalyptic number.

78377511467 is a deficient number, since it is larger than the sum of its proper divisors (4610441869).

78377511467 is a wasteful number, since it uses less digits than its factorization.

78377511467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4610441868.

The product of its digits is 6914880, while the sum is 56.

The spelling of 78377511467 in words is "seventy-eight billion, three hundred seventy-seven million, five hundred eleven thousand, four hundred sixty-seven".