406373404373604 has 48 divisors (see below), whose sum is σ = 1063991971875840. Its totient is φ = 134116635103200.

The previous prime is 406373404373603. The next prime is 406373404373623.

406373404373604 is a `hidden beast` number, since 40 + 6 + 3 + 73 + 40 + 437 + 3 + 60 + 4 = 666.

406373404373604 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×406373404373604² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (406373404373603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18627299524 + ... + 18627321339.

It is an arithmetic number, because the mean of its divisors is an integer number (22166499414080).

Almost surely, 2^{406373404373604} is an apocalyptic number.

It is an amenable number.

406373404373604 is an abundant number, since it is smaller than the sum of its proper divisors (657618567502236).

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

406373404373604 is a wasteful number, since it uses less digits than its factorization.

406373404373604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37254620977 (or 37254620969 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 54.

The spelling of 406373404373604 in words is "four hundred six trillion, three hundred seventy-three billion, four hundred four million, three hundred seventy-three thousand, six hundred four".