767045313421 has 4 divisors (see below), whose sum is σ = 767070263644. Its totient is φ = 767020363200.

The previous prime is 767045313407. The next prime is 767045313427. The reversal of 767045313421 is 124313540767.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124313540767 = 13 ⋅9562580059.

It can be written as a sum of positive squares in 2 ways, for example, as 302405407396 + 464639906025 = 549914^2 + 681645^2 .

It is a cyclic number.

It is not a de Polignac number, because 767045313421 - 2⁹ = 767045312909 is a prime.

It is a super-2 number, since 2×767045313421² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (767045313427) 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, 12428940 + ... + 12490501.

It is an arithmetic number, because the mean of its divisors is an integer number (191767565911).

Almost surely, 2^767045313421 is an apocalyptic number.

It is an amenable number.

767045313421 is a deficient number, since it is larger than the sum of its proper divisors (24950223).

767045313421 is a wasteful number, since it uses less digits than its factorization.

767045313421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24950222.

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 767045313421 in words is "seven hundred sixty-seven billion, forty-five million, three hundred thirteen thousand, four hundred twenty-one".