48779936566138 has 8 divisors (see below), whose sum is σ = 73170030101940. Its totient is φ = 24389926532160.

The previous prime is 48779936566103. The next prime is 48779936566139. The reversal of 48779936566138 is 83166563997784.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 48005179244929 + 774757321209 = 6928577^2 + 880203^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×48779936566138² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (48779936566139) 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, 19393983 + ... + 21764338.

Almost surely, 2^{48779936566138} is an apocalyptic number.

48779936566138 is a deficient number, since it is larger than the sum of its proper divisors (24390093535802).

48779936566138 is a wasteful number, since it uses less digits than its factorization.

48779936566138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41750912.

The product of its digits is 9876142080, while the sum is 82.

The spelling of 48779936566138 in words is "forty-eight trillion, seven hundred seventy-nine billion, nine hundred thirty-six million, five hundred sixty-six thousand, one hundred thirty-eight".