11499620921440 has 48 divisors (see below), whose sum is σ = 27168499316448. Its totient is φ = 4599739181056.

The previous prime is 11499620921413. The next prime is 11499620921441. The reversal of 11499620921440 is 4412902699411.

It is a happy number.

11499620921440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11499620921441) 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, 6084264 + ... + 7747096.

It is an arithmetic number, because the mean of its divisors is an integer number (566010402426).

Almost surely, 2^{11499620921440} is an apocalyptic number.

11499620921440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11499620921440 is an abundant number, since it is smaller than the sum of its proper divisors (15668878395008).

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

11499620921440 is a wasteful number, since it uses less digits than its factorization.

11499620921440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706071 (or 1706063 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 52.

The spelling of 11499620921440 in words is "eleven trillion, four hundred ninety-nine billion, six hundred twenty million, nine hundred twenty-one thousand, four hundred forty".