11400821616 has 40 divisors (see below), whose sum is σ = 29458543104. Its totient is φ = 3799445440.

The previous prime is 11400821611. The next prime is 11400821683. The reversal of 11400821616 is 61612800411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11400821611) 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, 220831 + ... + 267521.

Almost surely, 2^11400821616 is an apocalyptic number.

11400821616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11400821616 is an abundant number, since it is smaller than the sum of its proper divisors (18057721488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11400821616 is a wasteful number, since it uses less digits than its factorization.

11400821616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51789 (or 51783 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The spelling of 11400821616 in words is "eleven billion, four hundred million, eight hundred twenty-one thousand, six hundred sixteen".