747807524621 has 2 divisors, whose sum is σ = 747807524622. Its totient is φ = 747807524620.

The previous prime is 747807524479. The next prime is 747807524641. The reversal of 747807524621 is 126425708747.

It is a happy number.

747807524621 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., 743949375625 + 3858148996 = 862525^2 + 62114^2 .

It is a cyclic number.

It is not a de Polignac number, because 747807524621 - 2¹⁰ = 747807523597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (747807524641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373903762310 + 373903762311.

It is an arithmetic number, because the mean of its divisors is an integer number (373903762311).

Almost surely, 2^747807524621 is an apocalyptic number.

It is an amenable number.

747807524621 is a deficient number, since it is larger than the sum of its proper divisors (1).

747807524621 is an equidigital number, since it uses as much as digits as its factorization.

747807524621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5268480, while the sum is 53.

The spelling of 747807524621 in words is "seven hundred forty-seven billion, eight hundred seven million, five hundred twenty-four thousand, six hundred twenty-one".