1520120256326 has 32 divisors (see below), whose sum is σ = 2659478606400. Its totient is φ = 651387961728.

The previous prime is 1520120256323. The next prime is 1520120256349. The reversal of 1520120256326 is 6236520210251.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520120256323) 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, 4811486 + ... + 5117678.

It is an arithmetic number, because the mean of its divisors is an integer number (83108706450).

Almost surely, 2^{1520120256326} is an apocalyptic number.

1520120256326 is a deficient number, since it is larger than the sum of its proper divisors (1139358350074).

1520120256326 is an equidigital number, since it uses as much as digits as its factorization.

1520120256326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313453 (or 313439 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 1520120256326 its reverse (6236520210251), we get a palindrome (7756640466577).

The spelling of 1520120256326 in words is "one trillion, five hundred twenty billion, one hundred twenty million, two hundred fifty-six thousand, three hundred twenty-six".