742776524681 has 12 divisors (see below), whose sum is σ = 800475948720. Its totient is φ = 687318269400.

The previous prime is 742776524663. The next prime is 742776524759. The reversal of 742776524681 is 186425677247.

It is not a de Polignac number, because 742776524681 - 2³⁸ = 467898617737 is a prime.

It is a super-2 number, since 2×742776524681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 742776524681.

It is not an unprimeable number, because it can be changed into a prime (742776524981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10536395 + ... + 10606656.

It is an arithmetic number, because the mean of its divisors is an integer number (66706329060).

Almost surely, 2^742776524681 is an apocalyptic number.

It is an amenable number.

742776524681 is a deficient number, since it is larger than the sum of its proper divisors (57699424039).

742776524681 is a wasteful number, since it uses less digits than its factorization.

742776524681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21143156 (or 21143113 counting only the distinct ones).

The product of its digits is 31610880, while the sum is 59.

The spelling of 742776524681 in words is "seven hundred forty-two billion, seven hundred seventy-six million, five hundred twenty-four thousand, six hundred eighty-one".