642015610424 has 8 divisors (see below), whose sum is σ = 1203779269560. Its totient is φ = 321007805208.

The previous prime is 642015610421. The next prime is 642015610493. The reversal of 642015610424 is 424016510246.

642015610424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642015610421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40125975644 + ... + 40125975659.

It is an arithmetic number, because the mean of its divisors is an integer number (150472408695).

Almost surely, 2^642015610424 is an apocalyptic number.

It is an amenable number.

642015610424 is a deficient number, since it is larger than the sum of its proper divisors (561763659136).

642015610424 is a wasteful number, since it uses less digits than its factorization.

642015610424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80251951309 (or 80251951305 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 642015610424 in words is "six hundred forty-two billion, fifteen million, six hundred ten thousand, four hundred twenty-four".