740640234355571 has 8 divisors (see below), whose sum is σ = 817705757098944. Its totient is φ = 665197143670120.

The previous prime is 740640234355529. The next prime is 740640234355579. The reversal of 740640234355571 is 175553432046047.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-740640234355571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (740640234355579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405608013521 + ... + 405608015346.

It is an arithmetic number, because the mean of its divisors is an integer number (102213219637368).

Almost surely, 2^{740640234355571} is an apocalyptic number.

740640234355571 is a deficient number, since it is larger than the sum of its proper divisors (77065522743373).

740640234355571 is a wasteful number, since it uses less digits than its factorization.

740640234355571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811216028961.

The product of its (nonzero) digits is 42336000, while the sum is 56.

The spelling of 740640234355571 in words is "seven hundred forty trillion, six hundred forty billion, two hundred thirty-four million, three hundred fifty-five thousand, five hundred seventy-one".