133537563321 has 16 divisors (see below), whose sum is σ = 185437784448. Its totient is φ = 85398969600.

The previous prime is 133537563239. The next prime is 133537563343. The reversal of 133537563321 is 123365735331.

It is not a de Polignac number, because 133537563321 - 2⁷ = 133537563193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133537563121) 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, 8464240 + ... + 8480001.

It is an arithmetic number, because the mean of its divisors is an integer number (11589861528).

Almost surely, 2^133537563321 is an apocalyptic number.

It is an amenable number.

133537563321 is a deficient number, since it is larger than the sum of its proper divisors (51900221127).

133537563321 is a wasteful number, since it uses less digits than its factorization.

133537563321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16944352.

The product of its digits is 510300, while the sum is 42.

The spelling of 133537563321 in words is "one hundred thirty-three billion, five hundred thirty-seven million, five hundred sixty-three thousand, three hundred twenty-one".