1709397145256 has 32 divisors (see below), whose sum is σ = 3213474768000. Its totient is φ = 852473426496.

The previous prime is 1709397145249. The next prime is 1709397145277. The reversal of 1709397145256 is 6525417939071.

It is a junction number, because it is equal to n+sod(n) for n = 1709397145195 and 1709397145204.

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, 4579205 + ... + 4938411.

It is an arithmetic number, because the mean of its divisors is an integer number (100421086500).

Almost surely, 2^{1709397145256} is an apocalyptic number.

It is an amenable number.

1709397145256 is a deficient number, since it is larger than the sum of its proper divisors (1504077622744).

1709397145256 is a wasteful number, since it uses less digits than its factorization.

1709397145256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360761 (or 360757 counting only the distinct ones).

The product of its (nonzero) digits is 14288400, while the sum is 59.

The spelling of 1709397145256 in words is "one trillion, seven hundred nine billion, three hundred ninety-seven million, one hundred forty-five thousand, two hundred fifty-six".