403472396546391 has 16 divisors (see below), whose sum is σ = 538238345158368. Its totient is φ = 268844042188800.

The previous prime is 403472396546389. The next prime is 403472396546437. The reversal of 403472396546391 is 193645693274304.

It is not a de Polignac number, because 403472396546391 - 2¹ = 403472396546389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403472396546321) 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, 81138151 + ... + 85967111.

It is an arithmetic number, because the mean of its divisors is an integer number (33639896572398).

Almost surely, 2^{403472396546391} is an apocalyptic number.

403472396546391 is a deficient number, since it is larger than the sum of its proper divisors (134765948611977).

403472396546391 is a wasteful number, since it uses less digits than its factorization.

403472396546391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4843202.

The product of its (nonzero) digits is 352719360, while the sum is 66.

The spelling of 403472396546391 in words is "four hundred three trillion, four hundred seventy-two billion, three hundred ninety-six million, five hundred forty-six thousand, three hundred ninety-one".