40573215400821 has 4 divisors (see below), whose sum is σ = 54097620534432. Its totient is φ = 27048810267212.

The previous prime is 40573215400793. The next prime is 40573215400843. The reversal of 40573215400821 is 12800451237504.

40573215400821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40573215400821 - 2⁵ = 40573215400789 is a prime.

It is a super-2 number, since 2×40573215400821² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40573215400121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6762202566801 + ... + 6762202566806.

It is an arithmetic number, because the mean of its divisors is an integer number (13524405133608).

Almost surely, 2^{40573215400821} is an apocalyptic number.

It is an amenable number.

40573215400821 is a deficient number, since it is larger than the sum of its proper divisors (13524405133611).

40573215400821 is a wasteful number, since it uses less digits than its factorization.

40573215400821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13524405133610.

The product of its (nonzero) digits is 268800, while the sum is 42.

The spelling of 40573215400821 in words is "forty trillion, five hundred seventy-three billion, two hundred fifteen million, four hundred thousand, eight hundred twenty-one".