11451511116240 has 80 divisors (see below), whose sum is σ = 38230429429248. Its totient is φ = 2818833504768.

The previous prime is 11451511116193. The next prime is 11451511116247. The reversal of 11451511116240 is 4261111515411.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×11451511116240² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11451511116247) 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, 1835174944 + ... + 1835181183.

Almost surely, 2^{11451511116240} is an apocalyptic number.

11451511116240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11451511116240 is an abundant number, since it is smaller than the sum of its proper divisors (26778918313008).

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

11451511116240 is a wasteful number, since it uses less digits than its factorization.

11451511116240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3670356156 (or 3670356150 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 33.

The spelling of 11451511116240 in words is "eleven trillion, four hundred fifty-one billion, five hundred eleven million, one hundred sixteen thousand, two hundred forty".