11648818821 has 8 divisors (see below), whose sum is σ = 15544380544. Its totient is φ = 7759568160.

The previous prime is 11648818807. The next prime is 11648818847. The reversal of 11648818821 is 12881884611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11648818821 - 2¹⁷ = 11648687749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11648816821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1573456 + ... + 1580841.

It is an arithmetic number, because the mean of its divisors is an integer number (1943047568).

Almost surely, 2^11648818821 is an apocalyptic number.

It is an amenable number.

11648818821 is a deficient number, since it is larger than the sum of its proper divisors (3895561723).

11648818821 is a wasteful number, since it uses less digits than its factorization.

11648818821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155531.

The product of its digits is 196608, while the sum is 48.

The spelling of 11648818821 in words is "eleven billion, six hundred forty-eight million, eight hundred eighteen thousand, eight hundred twenty-one".