11540520201 has 16 divisors (see below), whose sum is σ = 17959716864. Its totient is φ = 6454272144.

The previous prime is 11540520149. The next prime is 11540520221. The reversal of 11540520201 is 10202504511.

It is not a de Polignac number, because 11540520201 - 2⁷ = 11540520073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (11540520221) 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, 5845275 + ... + 5847248.

It is an arithmetic number, because the mean of its divisors is an integer number (1122482304).

Almost surely, 2^11540520201 is an apocalyptic number.

It is an amenable number.

11540520201 is a deficient number, since it is larger than the sum of its proper divisors (6419196663).

11540520201 is a wasteful number, since it uses less digits than its factorization.

11540520201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11692580.

The product of its (nonzero) digits is 400, while the sum is 21.

The spelling of 11540520201 in words is "eleven billion, five hundred forty million, five hundred twenty thousand, two hundred one".