743861058661 has 4 divisors (see below), whose sum is σ = 850126924192. Its totient is φ = 637595193132.

The previous prime is 743861058643. The next prime is 743861058667. The reversal of 743861058661 is 166850168347.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 743861058661 - 2²⁵ = 743827504229 is a prime.

It is a super-2 number, since 2×743861058661² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743861058667) 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, 53132932755 + ... + 53132932768.

It is an arithmetic number, because the mean of its divisors is an integer number (212531731048).

Almost surely, 2^743861058661 is an apocalyptic number.

It is an amenable number.

743861058661 is a deficient number, since it is larger than the sum of its proper divisors (106265865531).

743861058661 is a wasteful number, since it uses less digits than its factorization.

743861058661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106265865530.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 743861058661 in words is "seven hundred forty-three billion, eight hundred sixty-one million, fifty-eight thousand, six hundred sixty-one".