11145020644457 has 4 divisors (see below), whose sum is σ = 12737166450816. Its totient is φ = 9552874838100.

The previous prime is 11145020644451. The next prime is 11145020644547. The reversal of 11145020644457 is 75444602054111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11145020644457 - 2⁶ = 11145020644393 is a prime.

It is a super-2 number, since 2×11145020644457² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11145020644451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 796072903169 + ... + 796072903182.

It is an arithmetic number, because the mean of its divisors is an integer number (3184291612704).

Almost surely, 2^{11145020644457} is an apocalyptic number.

It is an amenable number.

11145020644457 is a deficient number, since it is larger than the sum of its proper divisors (1592145806359).

11145020644457 is an equidigital number, since it uses as much as digits as its factorization.

11145020644457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592145806358.

The product of its (nonzero) digits is 537600, while the sum is 44.

Adding to 11145020644457 its reverse (75444602054111), we get a palindrome (86589622698568).

The spelling of 11145020644457 in words is "eleven trillion, one hundred forty-five billion, twenty million, six hundred forty-four thousand, four hundred fifty-seven".