155540214520011 has 12 divisors (see below), whose sum is σ = 226768910890392. Its totient is φ = 102724378436256.

The previous prime is 155540214519973. The next prime is 155540214520037. The reversal of 155540214520011 is 110025412045551.

155540214520011 is a `hidden beast` number, since 1 + 5 + 5 + 5 + 402 + 1 + 45 + 200 + 1 + 1 = 666.

155540214520011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155540214520011 - 2¹⁰ = 155540214518987 is a prime.

It is a super-3 number, since 3×155540214520011³ (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (155540214520081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80758158186 + ... + 80758160111.

It is an arithmetic number, because the mean of its divisors is an integer number (18897409240866).

Almost surely, 2^{155540214520011} is an apocalyptic number.

155540214520011 is a deficient number, since it is larger than the sum of its proper divisors (71228696370381).

155540214520011 is a wasteful number, since it uses less digits than its factorization.

155540214520011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161516318410 (or 161516318407 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 36.

Adding to 155540214520011 its reverse (110025412045551), we get a palindrome (265565626565562).

The spelling of 155540214520011 in words is "one hundred fifty-five trillion, five hundred forty billion, two hundred fourteen million, five hundred twenty thousand, eleven".