133172537433 has 16 divisors (see below), whose sum is σ = 191304978816. Its totient is φ = 81916813440.

The previous prime is 133172537419. The next prime is 133172537437. The reversal of 133172537433 is 334735271331.

It is a happy number.

It is not a de Polignac number, because 133172537433 - 2⁵ = 133172537401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133172537437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 648660 + ... + 828917.

It is an arithmetic number, because the mean of its divisors is an integer number (11956561176).

Almost surely, 2^133172537433 is an apocalyptic number.

133172537433 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

133172537433 is a deficient number, since it is larger than the sum of its proper divisors (58132441383).

133172537433 is a wasteful number, since it uses less digits than its factorization.

133172537433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479904.

The product of its digits is 476280, while the sum is 42.

The spelling of 133172537433 in words is "one hundred thirty-three billion, one hundred seventy-two million, five hundred thirty-seven thousand, four hundred thirty-three".