133681151504 has 10 divisors (see below), whose sum is σ = 259007231070. Its totient is φ = 66840575744.

The previous prime is 133681151503. The next prime is 133681151537. The reversal of 133681151504 is 405151186331.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 119127141904 + 14554009600 = 345148^2 + 120640^2 .

It is not an unprimeable number, because it can be changed into a prime (133681151503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4177535969 + ... + 4177536000.

It is an arithmetic number, because the mean of its divisors is an integer number (25900723107).

Almost surely, 2^133681151504 is an apocalyptic number.

It is an amenable number.

133681151504 is a deficient number, since it is larger than the sum of its proper divisors (125326079566).

133681151504 is an equidigital number, since it uses as much as digits as its factorization.

133681151504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8355071977 (or 8355071971 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 133681151504 in words is "one hundred thirty-three billion, six hundred eighty-one million, one hundred fifty-one thousand, five hundred four".