11655511165040 has 20 divisors (see below), whose sum is σ = 27099063458904. Its totient is φ = 4662204465984.

The previous prime is 11655511165037. The next prime is 11655511165057. The reversal of 11655511165040 is 4056111555611.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72846944702 + ... + 72846944861.

Almost surely, 2^{11655511165040} is an apocalyptic number.

11655511165040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11655511165040 is an abundant number, since it is smaller than the sum of its proper divisors (15443552293864).

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

11655511165040 is a wasteful number, since it uses less digits than its factorization.

11655511165040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145693889576 (or 145693889570 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 41.

The spelling of 11655511165040 in words is "eleven trillion, six hundred fifty-five billion, five hundred eleven million, one hundred sixty-five thousand, forty".