11621154546640 has 40 divisors (see below), whose sum is σ = 27020507619240. Its totient is φ = 4648234154496.

The previous prime is 11621154546587. The next prime is 11621154546667. The reversal of 11621154546640 is 4664545112611.

It can be written as a sum of positive squares in 4 ways, for example, as 184123377216 + 11437031169424 = 429096^2 + 3381868^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1908855 + ... + 5185174.

It is an arithmetic number, because the mean of its divisors is an integer number (675512690481).

Almost surely, 2^{11621154546640} is an apocalyptic number.

11621154546640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11621154546640 is an abundant number, since it is smaller than the sum of its proper divisors (15399353072600).

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

11621154546640 is a wasteful number, since it uses less digits than its factorization.

11621154546640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7114519 (or 7114513 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 11621154546640 in words is "eleven trillion, six hundred twenty-one billion, one hundred fifty-four million, five hundred forty-six thousand, six hundred forty".