400045132445 has 64 divisors (see below), whose sum is σ = 556484898816. Its totient is φ = 270428820480.

The previous prime is 400045132397. The next prime is 400045132453. The reversal of 400045132445 is 544231540004.

It is not a de Polignac number, because 400045132445 - 2⁸ = 400045132189 is a prime.

It is a super-2 number, since 2×400045132445² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 674612069 + ... + 674612661.

It is an arithmetic number, because the mean of its divisors is an integer number (8695076544).

Almost surely, 2^400045132445 is an apocalyptic number.

It is an amenable number.

400045132445 is a deficient number, since it is larger than the sum of its proper divisors (156439766371).

400045132445 is a wasteful number, since it uses less digits than its factorization.

400045132445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530.

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 400045132445 its reverse (544231540004), we get a palindrome (944276672449).

The spelling of 400045132445 in words is "four hundred billion, forty-five million, one hundred thirty-two thousand, four hundred forty-five".