642013473075 has 48 divisors (see below), whose sum is σ = 1144966988256. Its totient is φ = 315555609600.

The previous prime is 642013473071. The next prime is 642013473097. The reversal of 642013473075 is 570374310246.

It is not a de Polignac number, because 642013473075 - 2² = 642013473071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (642013473071) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67965 + ... + 1135185.

It is an arithmetic number, because the mean of its divisors is an integer number (23853478922).

Almost surely, 2^642013473075 is an apocalyptic number.

642013473075 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

642013473075 is a deficient number, since it is larger than the sum of its proper divisors (502953515181).

642013473075 is a wasteful number, since it uses less digits than its factorization.

642013473075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067864 (or 1067859 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 42.

The spelling of 642013473075 in words is "six hundred forty-two billion, thirteen million, four hundred seventy-three thousand, seventy-five".