77772672541741 has 4 divisors (see below), whose sum is σ = 78049443618684. Its totient is φ = 77495901464800.

The previous prime is 77772672541723. The next prime is 77772672541763. The reversal of 77772672541741 is 14714527627777.

It is a happy number.

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 17126114533641 + 60646558008100 = 4138371^2 + 7787590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77772672541741 is a prime.

It is a super-2 number, since 2×77772672541741² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77772672541721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138385538050 + ... + 138385538611.

It is an arithmetic number, because the mean of its divisors is an integer number (19512360904671).

Almost surely, 2^{77772672541741} is an apocalyptic number.

It is an amenable number.

77772672541741 is a deficient number, since it is larger than the sum of its proper divisors (276771076943).

77772672541741 is a wasteful number, since it uses less digits than its factorization.

77772672541741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276771076942.

The product of its digits is 225886080, while the sum is 67.

The spelling of 77772672541741 in words is "seventy-seven trillion, seven hundred seventy-two billion, six hundred seventy-two million, five hundred forty-one thousand, seven hundred forty-one".