78374617743 has 4 divisors (see below), whose sum is σ = 104499490328. Its totient is φ = 52249745160.

The previous prime is 78374617733. The next prime is 78374617753. The reversal of 78374617743 is 34771647387.

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

It is an interprime number because it is at equal distance from previous prime (78374617733) and next prime (78374617753).

It is not a de Polignac number, because 78374617743 - 2⁸ = 78374617487 is a prime.

It is a super-2 number, since 2×78374617743² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78374617733) 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, 13062436288 + ... + 13062436293.

It is an arithmetic number, because the mean of its divisors is an integer number (26124872582).

Almost surely, 2^78374617743 is an apocalyptic number.

78374617743 is a deficient number, since it is larger than the sum of its proper divisors (26124872585).

78374617743 is a wasteful number, since it uses less digits than its factorization.

78374617743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26124872584.

The product of its digits is 16595712, while the sum is 57.

The spelling of 78374617743 in words is "seventy-eight billion, three hundred seventy-four million, six hundred seventeen thousand, seven hundred forty-three".