768012138555 has 16 divisors (see below), whose sum is σ = 1228892628480. Its totient is φ = 409582071648.

The previous prime is 768012138541. The next prime is 768012138559. The reversal of 768012138555 is 555831210867.

768012138555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 768012138555 - 2⁷ = 768012138427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 768012138498 and 768012138507.

It is not an unprimeable number, because it can be changed into a prime (768012138559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1263517 + ... + 1769886.

It is an arithmetic number, because the mean of its divisors is an integer number (76805789280).

Almost surely, 2^768012138555 is an apocalyptic number.

768012138555 is a deficient number, since it is larger than the sum of its proper divisors (460880489925).

768012138555 is a wasteful number, since it uses less digits than its factorization.

768012138555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3050290.

The product of its (nonzero) digits is 2016000, while the sum is 51.

The spelling of 768012138555 in words is "seven hundred sixty-eight billion, twelve million, one hundred thirty-eight thousand, five hundred fifty-five".