77248133538 has 16 divisors (see below), whose sum is σ = 158264469216. Its totient is φ = 25121344160.

The previous prime is 77248133533. The next prime is 77248133591. The reversal of 77248133538 is 83533184277.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (77248133533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157008156 + ... + 157008647.

It is an arithmetic number, because the mean of its divisors is an integer number (9891529326).

Almost surely, 2^77248133538 is an apocalyptic number.

77248133538 is an abundant number, since it is smaller than the sum of its proper divisors (81016335678).

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

77248133538 is a wasteful number, since it uses less digits than its factorization.

77248133538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314016849.

The product of its digits is 3386880, while the sum is 51.

The spelling of 77248133538 in words is "seventy-seven billion, two hundred forty-eight million, one hundred thirty-three thousand, five hundred thirty-eight".