747540687461 has 2 divisors, whose sum is σ = 747540687462. Its totient is φ = 747540687460.

The previous prime is 747540687419. The next prime is 747540687473. The reversal of 747540687461 is 164786045747.

747540687461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 729606388900 + 17934298561 = 854170^2 + 133919^2 .

It is a cyclic number.

It is not a de Polignac number, because 747540687461 - 2¹⁰ = 747540686437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 747540687461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (747540687961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373770343730 + 373770343731.

It is an arithmetic number, because the mean of its divisors is an integer number (373770343731).

Almost surely, 2^747540687461 is an apocalyptic number.

It is an amenable number.

747540687461 is a deficient number, since it is larger than the sum of its proper divisors (1).

747540687461 is an equidigital number, since it uses as much as digits as its factorization.

747540687461 is an evil number, because the sum of its binary digits is even.

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

The spelling of 747540687461 in words is "seven hundred forty-seven billion, five hundred forty million, six hundred eighty-seven thousand, four hundred sixty-one".