1345155061631 has 2 divisors, whose sum is σ = 1345155061632. Its totient is φ = 1345155061630.

The previous prime is 1345155061603. The next prime is 1345155061633. The reversal of 1345155061631 is 1361605515431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345155061631 is a prime.

It is a super-2 number, since 2×1345155061631² (a number of 25 digits) contains 22 as substring.

Together with 1345155061633, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345155061633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672577530815 + 672577530816.

It is an arithmetic number, because the mean of its divisors is an integer number (672577530816).

Almost surely, 2^{1345155061631} is an apocalyptic number.

1345155061631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345155061631 is an equidigital number, since it uses as much as digits as its factorization.

1345155061631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 1345155061631 in words is "one trillion, three hundred forty-five billion, one hundred fifty-five million, sixty-one thousand, six hundred thirty-one".