7457745257818 has 16 divisors (see below), whose sum is σ = 11206522854720. Its totient is φ = 3722239936800.

The previous prime is 7457745257723. The next prime is 7457745257821. The reversal of 7457745257818 is 8187525477547.

It is a super-2 number, since 2×7457745257818² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5954398 + ... + 7097206.

It is an arithmetic number, because the mean of its divisors is an integer number (700407678420).

Almost surely, 2^{7457745257818} is an apocalyptic number.

7457745257818 is a deficient number, since it is larger than the sum of its proper divisors (3748777596902).

7457745257818 is a wasteful number, since it uses less digits than its factorization.

7457745257818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148613.

The product of its digits is 614656000, while the sum is 70.

The spelling of 7457745257818 in words is "seven trillion, four hundred fifty-seven billion, seven hundred forty-five million, two hundred fifty-seven thousand, eight hundred eighteen".