8742658613761 has 4 divisors (see below), whose sum is σ = 8742797385300. Its totient is φ = 8742519842224.

The previous prime is 8742658613747. The next prime is 8742658613803. The reversal of 8742658613761 is 1673168562478.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5260165185025 + 3482493428736 = 2293505^2 + 1866144^2 .

It is a cyclic number.

It is not a de Polignac number, because 8742658613761 - 2¹⁵ = 8742658580993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8742658613693 and 8742658613702.

It is not an unprimeable number, because it can be changed into a prime (8742650613761) 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, 69291226 + ... + 69417283.

It is an arithmetic number, because the mean of its divisors is an integer number (2185699346325).

Almost surely, 2^{8742658613761} is an apocalyptic number.

It is an amenable number.

8742658613761 is a deficient number, since it is larger than the sum of its proper divisors (138771539).

8742658613761 is a wasteful number, since it uses less digits than its factorization.

8742658613761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138771538.

The product of its digits is 81285120, while the sum is 64.

The spelling of 8742658613761 in words is "eight trillion, seven hundred forty-two billion, six hundred fifty-eight million, six hundred thirteen thousand, seven hundred sixty-one".