400642324071 has 64 divisors (see below), whose sum is σ = 616039680000. Its totient is φ = 229055299200.

The previous prime is 400642324021. The next prime is 400642324157. The reversal of 400642324071 is 170423246004.

It is not a de Polignac number, because 400642324071 - 2¹¹ = 400642322023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400642324001) 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 in 63 ways as a sum of consecutive naturals, for example, 171140361 + ... + 171142701.

It is an arithmetic number, because the mean of its divisors is an integer number (9625620000).

Almost surely, 2^400642324071 is an apocalyptic number.

400642324071 is a deficient number, since it is larger than the sum of its proper divisors (215397355929).

400642324071 is a wasteful number, since it uses less digits than its factorization.

400642324071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420.

The product of its (nonzero) digits is 32256, while the sum is 33.

The spelling of 400642324071 in words is "four hundred billion, six hundred forty-two million, three hundred twenty-four thousand, seventy-one".