642431310506732 has 12 divisors (see below), whose sum is σ = 1126925232328896. Its totient is φ = 320452672698480.

The previous prime is 642431310506731. The next prime is 642431310506737. The reversal of 642431310506732 is 237605013134246.

It is not an unprimeable number, because it can be changed into a prime (642431310506731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190745636828 + ... + 190745640195.

It is an arithmetic number, because the mean of its divisors is an integer number (93910436027408).

Almost surely, 2^{642431310506732} is an apocalyptic number.

It is an amenable number.

642431310506732 is a deficient number, since it is larger than the sum of its proper divisors (484493921822164).

642431310506732 is a wasteful number, since it uses less digits than its factorization.

642431310506732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381491277448 (or 381491277446 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 47.

The spelling of 642431310506732 in words is "six hundred forty-two trillion, four hundred thirty-one billion, three hundred ten million, five hundred six thousand, seven hundred thirty-two".