40523413430421 has 6 divisors (see below), whose sum is σ = 58533819399510. Its totient is φ = 27015608953608.

The previous prime is 40523413430417. The next prime is 40523413430497. The reversal of 40523413430421 is 12403431432504.

40523413430421 is a `hidden beast` number, since 4 + 0 + 5 + 2 + 341 + 3 + 4 + 304 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 24674168636100 + 15849244794321 = 4967310^2 + 3981111^2 .

It is not a de Polignac number, because 40523413430421 - 2² = 40523413430417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40523413430411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2251300746126 + ... + 2251300746143.

It is an arithmetic number, because the mean of its divisors is an integer number (9755636566585).

Almost surely, 2^{40523413430421} is an apocalyptic number.

It is an amenable number.

40523413430421 is a deficient number, since it is larger than the sum of its proper divisors (18010405969089).

40523413430421 is a wasteful number, since it uses less digits than its factorization.

40523413430421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4502601492275 (or 4502601492272 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 40523413430421 its reverse (12403431432504), we get a palindrome (52926844862925).

The spelling of 40523413430421 in words is "forty trillion, five hundred twenty-three billion, four hundred thirteen million, four hundred thirty thousand, four hundred twenty-one".