40550040251 has 4 divisors (see below), whose sum is σ = 46342903152. Its totient is φ = 34757177352.

The previous prime is 40550040199. The next prime is 40550040253. The reversal of 40550040251 is 15204005504.

40550040251 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 is a cyclic number.

It is not a de Polignac number, because 40550040251 - 2⁶ = 40550040187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40550040251.

It is not an unprimeable number, because it can be changed into a prime (40550040253) 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, 2896431440 + ... + 2896431453.

It is an arithmetic number, because the mean of its divisors is an integer number (11585725788).

Almost surely, 2^40550040251 is an apocalyptic number.

40550040251 is a deficient number, since it is larger than the sum of its proper divisors (5792862901).

40550040251 is an equidigital number, since it uses as much as digits as its factorization.

40550040251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5792862900.

The product of its (nonzero) digits is 4000, while the sum is 26.

Adding to 40550040251 its reverse (15204005504), we get a palindrome (55754045755).

The spelling of 40550040251 in words is "forty billion, five hundred fifty million, forty thousand, two hundred fifty-one".