78711051751 has 8 divisors (see below), whose sum is σ = 80869651664. Its totient is φ = 76554097920.

The previous prime is 78711051737. The next prime is 78711051779. The reversal of 78711051751 is 15715011787.

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 78711051751 - 2³³ = 70121117159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78711051698 and 78711051707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78711051781) 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, 314265 + ... + 506146.

It is an arithmetic number, because the mean of its divisors is an integer number (10108706458).

Almost surely, 2^78711051751 is an apocalyptic number.

78711051751 is a deficient number, since it is larger than the sum of its proper divisors (2158599913).

78711051751 is a wasteful number, since it uses less digits than its factorization.

78711051751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823041.

The product of its (nonzero) digits is 68600, while the sum is 43.

The spelling of 78711051751 in words is "seventy-eight billion, seven hundred eleven million, fifty-one thousand, seven hundred fifty-one".