15511100118040 has 32 divisors (see below), whose sum is σ = 34901388560880. Its totient is φ = 6204188794752.

The previous prime is 15511100117977. The next prime is 15511100118047. The reversal of 15511100118040 is 4081100111551.

15511100118040 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 (15511100118047) 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, 6849954 + ... + 8828593.

Almost surely, 2^{15511100118040} is an apocalyptic number.

15511100118040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15511100118040 is an abundant number, since it is smaller than the sum of its proper divisors (19390288442840).

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

15511100118040 is a wasteful number, since it uses less digits than its factorization.

15511100118040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15703291 (or 15703287 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 28.

Adding to 15511100118040 its reverse (4081100111551), we get a palindrome (19592200229591).

The spelling of 15511100118040 in words is "fifteen trillion, five hundred eleven billion, one hundred million, one hundred eighteen thousand, forty".