642467134684 has 6 divisors (see below), whose sum is σ = 1124317485704. Its totient is φ = 321233567340.

The previous prime is 642467134657. The next prime is 642467134703. The reversal of 642467134684 is 486431764246.

642467134684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80308391832 + ... + 80308391839.

Almost surely, 2^642467134684 is an apocalyptic number.

It is an amenable number.

642467134684 is a deficient number, since it is larger than the sum of its proper divisors (481850351020).

642467134684 is a wasteful number, since it uses less digits than its factorization.

642467134684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160616783675 (or 160616783673 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 55.

The spelling of 642467134684 in words is "six hundred forty-two billion, four hundred sixty-seven million, one hundred thirty-four thousand, six hundred eighty-four".