740509678457 has 8 divisors (see below), whose sum is σ = 780625150560. Its totient is φ = 700508334240.

The previous prime is 740509678453. The next prime is 740509678463. The reversal of 740509678457 is 754876905047.

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

It is a cyclic number.

It is not a de Polignac number, because 740509678457 - 2² = 740509678453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 740509678457.

It is not an unprimeable number, because it can be changed into a prime (740509678453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28518644 + ... + 28544597.

It is an arithmetic number, because the mean of its divisors is an integer number (97578143820).

Almost surely, 2^740509678457 is an apocalyptic number.

It is an amenable number.

740509678457 is a deficient number, since it is larger than the sum of its proper divisors (40115472103).

740509678457 is a wasteful number, since it uses less digits than its factorization.

740509678457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57063943.

The product of its (nonzero) digits is 59270400, while the sum is 62.

The spelling of 740509678457 in words is "seven hundred forty billion, five hundred nine million, six hundred seventy-eight thousand, four hundred fifty-seven".