11454145561555 has 16 divisors (see below), whose sum is σ = 13798632353760. Its totient is φ = 9127568556288.

The previous prime is 11454145561553. The next prime is 11454145561561. The reversal of 11454145561555 is 55516554145411.

It is a cyclic number.

It is not a de Polignac number, because 11454145561555 - 2¹ = 11454145561553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11454145561553) 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, 2347041 + ... + 5330749.

It is an arithmetic number, because the mean of its divisors is an integer number (862414522110).

Almost surely, 2^{11454145561555} is an apocalyptic number.

11454145561555 is a deficient number, since it is larger than the sum of its proper divisors (2344486792205).

11454145561555 is a wasteful number, since it uses less digits than its factorization.

11454145561555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986710.

The product of its digits is 6000000, while the sum is 52.

The spelling of 11454145561555 in words is "eleven trillion, four hundred fifty-four billion, one hundred forty-five million, five hundred sixty-one thousand, five hundred fifty-five".