74257436681357 has 8 divisors (see below), whose sum is σ = 75659025957984. Its totient is φ = 72855866129488.

The previous prime is 74257436681333. The next prime is 74257436681383. The reversal of 74257436681357 is 75318663475247.

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 74257436681357 - 2²² = 74257432487053 is a prime.

It is a super-2 number, since 2×74257436681357² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74257436686357) 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, 3457418 + ... + 12667620.

It is an arithmetic number, because the mean of its divisors is an integer number (9457378244748).

Almost surely, 2^{74257436681357} is an apocalyptic number.

It is an amenable number.

74257436681357 is a deficient number, since it is larger than the sum of its proper divisors (1401589276627).

74257436681357 is a wasteful number, since it uses less digits than its factorization.

74257436681357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9362379.

The product of its digits is 711244800, while the sum is 68.

The spelling of 74257436681357 in words is "seventy-four trillion, two hundred fifty-seven billion, four hundred thirty-six million, six hundred eighty-one thousand, three hundred fifty-seven".