1645157126313 has 16 divisors (see below), whose sum is σ = 2446263443200. Its totient is φ = 1092724285680.

The previous prime is 1645157126309. The next prime is 1645157126317. The reversal of 1645157126313 is 3136217515461.

1645157126313 is a `hidden beast` number, since 1 + 6 + 4 + 5 + 1 + 5 + 7 + 1 + 2 + 631 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (1645157126309) and next prime (1645157126317).

It is not a de Polignac number, because 1645157126313 - 2² = 1645157126309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1645157126317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112412878 + ... + 112427511.

It is an arithmetic number, because the mean of its divisors is an integer number (152891465200).

Almost surely, 2^{1645157126313} is an apocalyptic number.

It is an amenable number.

1645157126313 is a deficient number, since it is larger than the sum of its proper divisors (801106316887).

1645157126313 is a wasteful number, since it uses less digits than its factorization.

1645157126313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224840669 (or 224840663 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The spelling of 1645157126313 in words is "one trillion, six hundred forty-five billion, one hundred fifty-seven million, one hundred twenty-six thousand, three hundred thirteen".