11411527821 has 16 divisors (see below), whose sum is σ = 15403239936. Its totient is φ = 7513804976.

The previous prime is 11411527817. The next prime is 11411527861. The reversal of 11411527821 is 12872511411.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11411527821 - 2² = 11411527817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11411527861) 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, 1630696 + ... + 1637678.

It is an arithmetic number, because the mean of its divisors is an integer number (962702496).

Almost surely, 2^11411527821 is an apocalyptic number.

It is an amenable number.

11411527821 is a deficient number, since it is larger than the sum of its proper divisors (3991712115).

11411527821 is an equidigital number, since it uses as much as digits as its factorization.

11411527821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13632.

The product of its digits is 4480, while the sum is 33.

The spelling of 11411527821 in words is "eleven billion, four hundred eleven million, five hundred twenty-seven thousand, eight hundred twenty-one".