642463680102 has 64 divisors (see below), whose sum is σ = 1364530489344. Its totient is φ = 201303774720.

The previous prime is 642463680101. The next prime is 642463680149. The reversal of 642463680102 is 201086364246.

642463680102 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 not an unprimeable number, because it can be changed into a prime (642463680101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4002313 + ... + 4159739.

It is an arithmetic number, because the mean of its divisors is an integer number (21320788896).

Almost surely, 2^642463680102 is an apocalyptic number.

642463680102 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

642463680102 is an abundant number, since it is smaller than the sum of its proper divisors (722066809242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642463680102 is a wasteful number, since it uses less digits than its factorization.

642463680102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158093.

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 642463680102 in words is "six hundred forty-two billion, four hundred sixty-three million, six hundred eighty thousand, one hundred two".