40051351121 has 2 divisors, whose sum is σ = 40051351122. Its totient is φ = 40051351120.

The previous prime is 40051351111. The next prime is 40051351133. The reversal of 40051351121 is 12115315004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34581121600 + 5470229521 = 185960^2 + 73961^2 .

It is a cyclic number.

It is not a de Polignac number, because 40051351121 - 2²² = 40047156817 is a prime.

It is a super-2 number, since 2×40051351121² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40051351111) 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 as a sum of consecutive naturals, namely, 20025675560 + 20025675561.

It is an arithmetic number, because the mean of its divisors is an integer number (20025675561).

Almost surely, 2^40051351121 is an apocalyptic number.

It is an amenable number.

40051351121 is a deficient number, since it is larger than the sum of its proper divisors (1).

40051351121 is an equidigital number, since it uses as much as digits as its factorization.

40051351121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 40051351121 its reverse (12115315004), we get a palindrome (52166666125).

The spelling of 40051351121 in words is "forty billion, fifty-one million, three hundred fifty-one thousand, one hundred twenty-one".