11453640554121 has 24 divisors (see below), whose sum is σ = 16145915404320. Its totient is φ = 7221164537664.

The previous prime is 11453640554107. The next prime is 11453640554179. The reversal of 11453640554121 is 12145504635411.

It is a happy number.

It is not a de Polignac number, because 11453640554121 - 2⁵ = 11453640554089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11453640556121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8677135 + ... + 9909588.

It is an arithmetic number, because the mean of its divisors is an integer number (672746475180).

Almost surely, 2^{11453640554121} is an apocalyptic number.

It is an amenable number.

11453640554121 is a deficient number, since it is larger than the sum of its proper divisors (4692274850199).

11453640554121 is a wasteful number, since it uses less digits than its factorization.

11453640554121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18587333 (or 18587314 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 42.

The spelling of 11453640554121 in words is "eleven trillion, four hundred fifty-three billion, six hundred forty million, five hundred fifty-four thousand, one hundred twenty-one".