172435783875 has 16 divisors (see below), whose sum is σ = 286933144992. Its totient is φ = 91965751200.

The previous prime is 172435783853. The next prime is 172435783901. The reversal of 172435783875 is 578387534271.

It is not a de Polignac number, because 172435783875 - 2⁵ = 172435783843 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229914004 + ... + 229914753.

It is an arithmetic number, because the mean of its divisors is an integer number (17933321562).

Almost surely, 2^172435783875 is an apocalyptic number.

172435783875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

172435783875 is a deficient number, since it is larger than the sum of its proper divisors (114497361117).

172435783875 is an equidigital number, since it uses as much as digits as its factorization.

172435783875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459828775 (or 459828765 counting only the distinct ones).

The product of its digits is 39513600, while the sum is 60.

The spelling of 172435783875 in words is "one hundred seventy-two billion, four hundred thirty-five million, seven hundred eighty-three thousand, eight hundred seventy-five".