400716522654 has 64 divisors (see below), whose sum is σ = 947955363840. Its totient is φ = 110490186240.

The previous prime is 400716522641. The next prime is 400716522721. The reversal of 400716522654 is 456225617004.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2533414 + ... + 2686934.

It is an arithmetic number, because the mean of its divisors is an integer number (14811802560).

Almost surely, 2^400716522654 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400716522654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (473977681920).

400716522654 is an abundant number, since it is smaller than the sum of its proper divisors (547238841186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400716522654 is a wasteful number, since it uses less digits than its factorization.

400716522654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155705.

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 400716522654 in words is "four hundred billion, seven hundred sixteen million, five hundred twenty-two thousand, six hundred fifty-four".