66875188425402 has 64 divisors (see below), whose sum is σ = 152967006388224. Its totient is φ = 19093522538880.

The previous prime is 66875188425401. The next prime is 66875188425433. The reversal of 66875188425402 is 20452488157866.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66875188425401) 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, 333157527 + ... + 333358197.

It is an arithmetic number, because the mean of its divisors is an integer number (2390109474816).

Almost surely, 2^{66875188425402} is an apocalyptic number.

66875188425402 is an abundant number, since it is smaller than the sum of its proper divisors (86091817962822).

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

66875188425402 is a wasteful number, since it uses less digits than its factorization.

66875188425402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206323.

The product of its (nonzero) digits is 206438400, while the sum is 66.

The spelling of 66875188425402 in words is "sixty-six trillion, eight hundred seventy-five billion, one hundred eighty-eight million, four hundred twenty-five thousand, four hundred two".