11551533051023 has 16 divisors (see below), whose sum is σ = 13215502707456. Its totient is φ = 9891004443840.

The previous prime is 11551533051017. The next prime is 11551533051061. The reversal of 11551533051023 is 32015033515511.

It is a cyclic number.

It is not a de Polignac number, because 11551533051023 - 2⁴⁰ = 10452021423247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11551533021023) 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, 41708840 + ... + 41984882.

It is an arithmetic number, because the mean of its divisors is an integer number (825968919216).

Almost surely, 2^{11551533051023} is an apocalyptic number.

11551533051023 is a deficient number, since it is larger than the sum of its proper divisors (1663969656433).

11551533051023 is a wasteful number, since it uses less digits than its factorization.

11551533051023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282254.

The product of its (nonzero) digits is 33750, while the sum is 35.

Adding to 11551533051023 its reverse (32015033515511), we get a palindrome (43566566566534).

The spelling of 11551533051023 in words is "eleven trillion, five hundred fifty-one billion, five hundred thirty-three million, fifty-one thousand, twenty-three".