1075720620909 has 16 divisors (see below), whose sum is σ = 1564797605184. Its totient is φ = 651904780800.

The previous prime is 1075720620899. The next prime is 1075720620943. The reversal of 1075720620909 is 9090260275701.

It is not a de Polignac number, because 1075720620909 - 2¹⁶ = 1075720555373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1075720620209) 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, 711414 + ... + 1630199.

It is an arithmetic number, because the mean of its divisors is an integer number (97799850324).

Almost surely, 2^{1075720620909} is an apocalyptic number.

It is an amenable number.

1075720620909 is a deficient number, since it is larger than the sum of its proper divisors (489076984275).

1075720620909 is a wasteful number, since it uses less digits than its factorization.

1075720620909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355548.

The product of its (nonzero) digits is 476280, while the sum is 48.

The spelling of 1075720620909 in words is "one trillion, seventy-five billion, seven hundred twenty million, six hundred twenty thousand, nine hundred nine".