400520153445 has 32 divisors (see below), whose sum is σ = 668735039232. Its totient is φ = 204310943232.

The previous prime is 400520153393. The next prime is 400520153461. The reversal of 400520153445 is 544351025004.

It is not a de Polignac number, because 400520153445 - 2¹⁶ = 400520087909 is a prime.

It is a congruent number.

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, 9098809 + ... + 9142721.

It is an arithmetic number, because the mean of its divisors is an integer number (20897969976).

Almost surely, 2^400520153445 is an apocalyptic number.

It is an amenable number.

400520153445 is a deficient number, since it is larger than the sum of its proper divisors (268214885787).

400520153445 is a wasteful number, since it uses less digits than its factorization.

400520153445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70381.

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 400520153445 its reverse (544351025004), we get a palindrome (944871178449).

The spelling of 400520153445 in words is "four hundred billion, five hundred twenty million, one hundred fifty-three thousand, four hundred forty-five".