7814531345657 has 4 divisors (see below), whose sum is σ = 7815882645120. Its totient is φ = 7813180046196.

The previous prime is 7814531345653. The next prime is 7814531345659. The reversal of 7814531345657 is 7565431354187.

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 7814531345657 - 2² = 7814531345653 is a prime.

It is a super-2 number, since 2×7814531345657² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7814531345596 and 7814531345605.

It is not an unprimeable number, because it can be changed into a prime (7814531345653) 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, 675641057 + ... + 675652622.

It is an arithmetic number, because the mean of its divisors is an integer number (1953970661280).

Almost surely, 2^{7814531345657} is an apocalyptic number.

It is an amenable number.

7814531345657 is a deficient number, since it is larger than the sum of its proper divisors (1351299463).

7814531345657 is a wasteful number, since it uses less digits than its factorization.

7814531345657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351299462.

The product of its digits is 42336000, while the sum is 59.

The spelling of 7814531345657 in words is "seven trillion, eight hundred fourteen billion, five hundred thirty-one million, three hundred forty-five thousand, six hundred fifty-seven".