7940397506594 has 40 divisors (see below), whose sum is σ = 13897071139740. Its totient is φ = 3402488140128.

The previous prime is 7940397506593. The next prime is 7940397506609. The reversal of 7940397506594 is 4956057930497.

It can be written as a sum of positive squares in 2 ways, for example, as 4882575219025 + 3057822287569 = 2209655^2 + 1748663^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7940397506593) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 30936332 + ... + 31191944.

Almost surely, 2^{7940397506594} is an apocalyptic number.

7940397506594 is a deficient number, since it is larger than the sum of its proper divisors (5956673633146).

7940397506594 is an equidigital number, since it uses as much as digits as its factorization.

7940397506594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262112 (or 262091 counting only the distinct ones).

The product of its (nonzero) digits is 257191200, while the sum is 68.

The spelling of 7940397506594 in words is "seven trillion, nine hundred forty billion, three hundred ninety-seven million, five hundred six thousand, five hundred ninety-four".