6406331877746 has 4 divisors (see below), whose sum is σ = 9609497816622. Its totient is φ = 3203165938872.

The previous prime is 6406331877719. The next prime is 6406331877763. The reversal of 6406331877746 is 6477781336046.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6383399318521 + 22932559225 = 2526539^2 + 151435^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1601582969435 + ... + 1601582969438.

Almost surely, 2^{6406331877746} is an apocalyptic number.

6406331877746 is a deficient number, since it is larger than the sum of its proper divisors (3203165938876).

6406331877746 is a wasteful number, since it uses less digits than its factorization.

6406331877746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203165938875.

The product of its (nonzero) digits is 85349376, while the sum is 62.

The spelling of 6406331877746 in words is "six trillion, four hundred six billion, three hundred thirty-one million, eight hundred seventy-seven thousand, seven hundred forty-six".