1645157126312 has 32 divisors (see below), whose sum is σ = 3525396739200. Its totient is φ = 705055331904.

The previous prime is 1645157126309. The next prime is 1645157126317. The reversal of 1645157126312 is 2136217515461.

It is a happy number.

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

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3588614 + ... + 4021002.

It is an arithmetic number, because the mean of its divisors is an integer number (110168648100).

Almost surely, 2^{1645157126312} is an apocalyptic number.

It is an amenable number.

1645157126312 is an abundant number, since it is smaller than the sum of its proper divisors (1880239612888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1645157126312 is a wasteful number, since it uses less digits than its factorization.

1645157126312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500345 (or 500341 counting only the distinct ones).

The product of its digits is 302400, while the sum is 44.

The spelling of 1645157126312 in words is "one trillion, six hundred forty-five billion, one hundred fifty-seven million, one hundred twenty-six thousand, three hundred twelve".