211155050628 has 18 divisors (see below), whose sum is σ = 533753044734. Its totient is φ = 70385016864.

The previous prime is 211155050621. The next prime is 211155050633. The reversal of 211155050628 is 826050551112.

211155050628 is a `hidden beast` number, since 2 + 11 + 15 + 5 + 0 + 5 + 0 + 628 = 666.

It can be written as a sum of positive squares in only one way, i.e., 211083275844 + 71774784 = 459438^2 + 8472^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 5865418073 = 211155050628 / (2 + 1 + 1 + 1 + 5 + 5 + 0 + 5 + 0 + 6 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 211155050592 and 211155050601.

It is not an unprimeable number, because it can be changed into a prime (211155050621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2932709001 + ... + 2932709072.

Almost surely, 2^211155050628 is an apocalyptic number.

It is an amenable number.

211155050628 is an abundant number, since it is smaller than the sum of its proper divisors (322597994106).

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

211155050628 is a wasteful number, since it uses less digits than its factorization.

211155050628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5865418083 (or 5865418078 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 36.

The spelling of 211155050628 in words is "two hundred eleven billion, one hundred fifty-five million, fifty thousand, six hundred twenty-eight".