747534660742061 has 4 divisors (see below), whose sum is σ = 752296028008092. Its totient is φ = 742773293476032.

The previous prime is 747534660742049. The next prime is 747534660742081. The reversal of 747534660742061 is 160247066435747.

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 413527273036900 + 334007387705161 = 20335370^2 + 18275869^2 .

It is a cyclic number.

It is not a de Polignac number, because 747534660742061 - 2⁶ = 747534660741997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 747534660741985 and 747534660742003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747534660742031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2380683632780 + ... + 2380683633093.

It is an arithmetic number, because the mean of its divisors is an integer number (188074007002023).

Almost surely, 2^{747534660742061} is an apocalyptic number.

It is an amenable number.

747534660742061 is a deficient number, since it is larger than the sum of its proper divisors (4761367266031).

747534660742061 is a wasteful number, since it uses less digits than its factorization.

747534660742061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4761367266030.

The product of its (nonzero) digits is 142248960, while the sum is 62.

The spelling of 747534660742061 in words is "seven hundred forty-seven trillion, five hundred thirty-four billion, six hundred sixty million, seven hundred forty-two thousand, sixty-one".