5156438746667 has 4 divisors (see below), whose sum is σ = 5553087881040. Its totient is φ = 4759789612296.

The previous prime is 5156438746651. The next prime is 5156438746703. The reversal of 5156438746667 is 7666478346515.

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 5156438746667 - 2⁴ = 5156438746651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5156438746597 and 5156438746606.

It is not an unprimeable number, because it can be changed into a prime (5156438746367) 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, 198324567167 + ... + 198324567192.

It is an arithmetic number, because the mean of its divisors is an integer number (1388271970260).

Almost surely, 2^{5156438746667} is an apocalyptic number.

5156438746667 is a deficient number, since it is larger than the sum of its proper divisors (396649134373).

5156438746667 is a wasteful number, since it uses less digits than its factorization.

5156438746667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396649134372.

The product of its digits is 609638400, while the sum is 68.

The spelling of 5156438746667 in words is "five trillion, one hundred fifty-six billion, four hundred thirty-eight million, seven hundred forty-six thousand, six hundred sixty-seven".