63431074044405 has 12 divisors (see below), whose sum is σ = 109947195010380. Its totient is φ = 33829906156992.

The previous prime is 63431074044379. The next prime is 63431074044409. The reversal of 63431074044405 is 50444047013436.

63431074044405 is a `hidden beast` number, since 63 + 4 + 3 + 107 + 40 + 4 + 440 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 47050023927204 + 16381050117201 = 6859302^2 + 4047351^2 .

It is not a de Polignac number, because 63431074044405 - 2⁹ = 63431074043893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1409579423209 = 63431074044405 / (6 + 3 + 4 + 3 + 1 + 0 + 7 + 4 + 0 + 4 + 4 + 4 + 0 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63431074044409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 704789711560 + ... + 704789711649.

It is an arithmetic number, because the mean of its divisors is an integer number (9162266250865).

Almost surely, 2^{63431074044405} is an apocalyptic number.

It is an amenable number.

63431074044405 is a deficient number, since it is larger than the sum of its proper divisors (46516120965975).

63431074044405 is a wasteful number, since it uses less digits than its factorization.

63431074044405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409579423220 (or 1409579423217 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 45.

The spelling of 63431074044405 in words is "sixty-three trillion, four hundred thirty-one billion, seventy-four million, forty-four thousand, four hundred five".