133238694905 has 16 divisors (see below), whose sum is σ = 167292670464. Its totient is φ = 101678723520.

The previous prime is 133238694887. The next prime is 133238694907. The reversal of 133238694905 is 509496832331.

It is not a de Polignac number, because 133238694905 - 2⁸ = 133238694649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133238694907) 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, 1536266 + ... + 1620675.

It is an arithmetic number, because the mean of its divisors is an integer number (10455791904).

Almost surely, 2^133238694905 is an apocalyptic number.

It is an amenable number.

133238694905 is a deficient number, since it is larger than the sum of its proper divisors (34053975559).

133238694905 is a wasteful number, since it uses less digits than its factorization.

133238694905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3157336.

The product of its (nonzero) digits is 4199040, while the sum is 53.

The spelling of 133238694905 in words is "one hundred thirty-three billion, two hundred thirty-eight million, six hundred ninety-four thousand, nine hundred five".