40516331402621 has 2 divisors, whose sum is σ = 40516331402622. Its totient is φ = 40516331402620.

The previous prime is 40516331402597. The next prime is 40516331402639. The reversal of 40516331402621 is 12620413361504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40295136144025 + 221195258596 = 6347845^2 + 470314^2 .

It is a cyclic number.

It is not a de Polignac number, because 40516331402621 - 2³⁴ = 40499151533437 is a prime.

It is a super-2 number, since 2×40516331402621² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40516331402641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20258165701310 + 20258165701311.

It is an arithmetic number, because the mean of its divisors is an integer number (20258165701311).

Almost surely, 2^{40516331402621} is an apocalyptic number.

It is an amenable number.

40516331402621 is a deficient number, since it is larger than the sum of its proper divisors (1).

40516331402621 is an equidigital number, since it uses as much as digits as its factorization.

40516331402621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 40516331402621 in words is "forty trillion, five hundred sixteen billion, three hundred thirty-one million, four hundred two thousand, six hundred twenty-one".