1009243787145 has 32 divisors (see below), whose sum is σ = 1776147778944. Its totient is φ = 489330311360.

The previous prime is 1009243787131. The next prime is 1009243787147. The reversal of 1009243787145 is 5417873429001.

It is not a de Polignac number, because 1009243787145 - 2¹² = 1009243783049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1009243787147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25255362 + ... + 25295291.

It is an arithmetic number, because the mean of its divisors is an integer number (55504618092).

Almost surely, 2^{1009243787145} is an apocalyptic number.

1009243787145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1009243787145 is a deficient number, since it is larger than the sum of its proper divisors (766903991799).

1009243787145 is an equidigital number, since it uses as much as digits as its factorization.

1009243787145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50550694 (or 50550672 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 1009243787145 in words is "one trillion, nine billion, two hundred forty-three million, seven hundred eighty-seven thousand, one hundred forty-five".