40210550161 has 4 divisors (see below), whose sum is σ = 40242039732. Its totient is φ = 40179060592.

The previous prime is 40210550153. The next prime is 40210550183. The reversal of 40210550161 is 16105501204.

It is a happy number.

40210550161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28398990400 + 11811559761 = 168520^2 + 108681^2 .

It is a cyclic number.

It is not a de Polignac number, because 40210550161 - 2³ = 40210550153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40210550111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15742870 + ... + 15745423.

It is an arithmetic number, because the mean of its divisors is an integer number (10060509933).

Almost surely, 2^40210550161 is an apocalyptic number.

It is an amenable number.

40210550161 is a deficient number, since it is larger than the sum of its proper divisors (31489571).

40210550161 is a wasteful number, since it uses less digits than its factorization.

40210550161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31489570.

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 40210550161 in words is "forty billion, two hundred ten million, five hundred fifty thousand, one hundred sixty-one".