1345947958957 has 6 divisors (see below), whose sum is σ = 1565694564558. Its totient is φ = 1153669679064.

The previous prime is 1345947958951. The next prime is 1345947958963. The reversal of 1345947958957 is 7598597495431.

It is an interprime number because it is at equal distance from previous prime (1345947958951) and next prime (1345947958963).

It can be written as a sum of positive squares in only one way, i.e., 994475650756 + 351472308201 = 997234^2 + 592851^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1345947958957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345947958951) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13734162798 + ... + 13734162895.

It is an arithmetic number, because the mean of its divisors is an integer number (260949094093).

Almost surely, 2^{1345947958957} is an apocalyptic number.

It is an amenable number.

1345947958957 is a deficient number, since it is larger than the sum of its proper divisors (219746605601).

1345947958957 is an equidigital number, since it uses as much as digits as its factorization.

1345947958957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27468325707 (or 27468325700 counting only the distinct ones).

The product of its digits is 1714608000, while the sum is 76.

The spelling of 1345947958957 in words is "one trillion, three hundred forty-five billion, nine hundred forty-seven million, nine hundred fifty-eight thousand, nine hundred fifty-seven".