400034321121554 has 64 divisors (see below), whose sum is σ = 746844281164800. Its totient is φ = 156801224962368.

The previous prime is 400034321121527. The next prime is 400034321121577. The reversal of 400034321121554 is 455121123430004.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64187837 + ... + 70143759.

It is an arithmetic number, because the mean of its divisors is an integer number (11669441893200).

Almost surely, 2^{400034321121554} is an apocalyptic number.

400034321121554 is a deficient number, since it is larger than the sum of its proper divisors (346809960043246).

400034321121554 is a wasteful number, since it uses less digits than its factorization.

400034321121554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5964687.

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 400034321121554 its reverse (455121123430004), we get a palindrome (855155444551558).

The spelling of 400034321121554 in words is "four hundred trillion, thirty-four billion, three hundred twenty-one million, one hundred twenty-one thousand, five hundred fifty-four".