76542138906 has 32 divisors (see below), whose sum is σ = 156694769088. Its totient is φ = 24912679680.

The previous prime is 76542138901. The next prime is 76542138919. The reversal of 76542138906 is 60983124567.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (76542138901) 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, 783876 + ... + 876096.

It is an arithmetic number, because the mean of its divisors is an integer number (4896711534).

It is a 1-persistent number, because it is pandigital, but 2⋅76542138906 = 153084277812 is not.

Almost surely, 2^76542138906 is an apocalyptic number.

It is a pronic number, being equal to 276662×276663.

76542138906 is an abundant number, since it is smaller than the sum of its proper divisors (80152630182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76542138906 is a wasteful number, since it uses less digits than its factorization.

76542138906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95486.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 76542138906 in words is "seventy-six billion, five hundred forty-two million, one hundred thirty-eight thousand, nine hundred six".