40450353551 has 4 divisors (see below), whose sum is σ = 40452677400. Its totient is φ = 40448029704.

The previous prime is 40450353547. The next prime is 40450353553. The reversal of 40450353551 is 15535305404.

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 40450353551 - 2² = 40450353547 is a prime.

It is a super-2 number, since 2×40450353551² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40450353553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1135616 + ... + 1170693.

It is an arithmetic number, because the mean of its divisors is an integer number (10113169350).

Almost surely, 2^40450353551 is an apocalyptic number.

40450353551 is a deficient number, since it is larger than the sum of its proper divisors (2323849).

40450353551 is a wasteful number, since it uses less digits than its factorization.

40450353551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323848.

The product of its (nonzero) digits is 90000, while the sum is 35.

Adding to 40450353551 its reverse (15535305404), we get a palindrome (55985658955).

The spelling of 40450353551 in words is "forty billion, four hundred fifty million, three hundred fifty-three thousand, five hundred fifty-one".