40553350251 has 4 divisors (see below), whose sum is σ = 54071133672. Its totient is φ = 27035566832.

The previous prime is 40553350249. The next prime is 40553350273. The reversal of 40553350251 is 15205335504.

It is a happy number.

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 40553350251 - 2¹ = 40553350249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40553350291) 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, 6758891706 + ... + 6758891711.

It is an arithmetic number, because the mean of its divisors is an integer number (13517783418).

Almost surely, 2^40553350251 is an apocalyptic number.

40553350251 is a deficient number, since it is larger than the sum of its proper divisors (13517783421).

40553350251 is a wasteful number, since it uses less digits than its factorization.

40553350251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13517783420.

The product of its (nonzero) digits is 45000, while the sum is 33.

Adding to 40553350251 its reverse (15205335504), we get a palindrome (55758685755).

The spelling of 40553350251 in words is "forty billion, five hundred fifty-three million, three hundred fifty thousand, two hundred fifty-one".