7138578877837 has 4 divisors (see below), whose sum is σ = 7787540594016. Its totient is φ = 6489617161660.

The previous prime is 7138578877819. The next prime is 7138578877873. The reversal of 7138578877837 is 7387788758317.

7138578877837 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7138578877837 - 2²³ = 7138570489229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7138578877817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324480858073 + ... + 324480858094.

It is an arithmetic number, because the mean of its divisors is an integer number (1946885148504).

Almost surely, 2^{7138578877837} is an apocalyptic number.

It is an amenable number.

7138578877837 is a deficient number, since it is larger than the sum of its proper divisors (648961716179).

7138578877837 is a wasteful number, since it uses less digits than its factorization.

7138578877837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648961716178.

The product of its digits is 3097866240, while the sum is 79.

The spelling of 7138578877837 in words is "seven trillion, one hundred thirty-eight billion, five hundred seventy-eight million, eight hundred seventy-seven thousand, eight hundred thirty-seven".