133081944490 has 32 divisors (see below), whose sum is σ = 261350499456. Its totient is φ = 48388628160.

The previous prime is 133081944487. The next prime is 133081944497. The reversal of 133081944490 is 94449180331.

It is a self number, because there is not a number n which added to its sum of digits gives 133081944490.

It is not an unprimeable number, because it can be changed into a prime (133081944497) 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, 1165699 + ... + 1274761.

It is an arithmetic number, because the mean of its divisors is an integer number (8167203108).

Almost surely, 2^133081944490 is an apocalyptic number.

133081944490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133081944490 is a deficient number, since it is larger than the sum of its proper divisors (128268554966).

133081944490 is a wasteful number, since it uses less digits than its factorization.

133081944490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120174.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 133081944490 in words is "one hundred thirty-three billion, eighty-one million, nine hundred forty-four thousand, four hundred ninety".