78532862511838 has 16 divisors (see below), whose sum is σ = 134956927553760. Its totient is φ = 33574650264576.

The previous prime is 78532862511827. The next prime is 78532862511853. The reversal of 78532862511838 is 83811526823587.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6857561731 + ... + 6857573182.

It is an arithmetic number, because the mean of its divisors is an integer number (8434807972110).

Almost surely, 2^{78532862511838} is an apocalyptic number.

78532862511838 is a deficient number, since it is larger than the sum of its proper divisors (56424065041922).

78532862511838 is a wasteful number, since it uses less digits than its factorization.

78532862511838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13715135331.

The product of its digits is 154828800, while the sum is 67.

The spelling of 78532862511838 in words is "seventy-eight trillion, five hundred thirty-two billion, eight hundred sixty-two million, five hundred eleven thousand, eight hundred thirty-eight".