11555151555541 has 8 divisors (see below), whose sum is σ = 12946312308384. Its totient is φ = 10220772874320.

The previous prime is 11555151555527. The next prime is 11555151555547. The reversal of 11555151555541 is 14555515155511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11555151555541 - 2⁹ = 11555151555029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11555151555547) 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, 14195517475 + ... + 14195518288.

It is an arithmetic number, because the mean of its divisors is an integer number (1618289038548).

Almost surely, 2^{11555151555541} is an apocalyptic number.

11555151555541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11555151555541 is a deficient number, since it is larger than the sum of its proper divisors (1391160752843).

11555151555541 is a wasteful number, since it uses less digits than its factorization.

11555151555541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28391035811.

The product of its digits is 1562500, while the sum is 49.

The spelling of 11555151555541 in words is "eleven trillion, five hundred fifty-five billion, one hundred fifty-one million, five hundred fifty-five thousand, five hundred forty-one".