133493779490 has 32 divisors (see below), whose sum is σ = 244298571264. Its totient is φ = 52509219840.

The previous prime is 133493779469. The next prime is 133493779513. The reversal of 133493779490 is 94977394331.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213935 + ... + 559245.

It is an arithmetic number, because the mean of its divisors is an integer number (7634330352).

Almost surely, 2^133493779490 is an apocalyptic number.

133493779490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133493779490 is a deficient number, since it is larger than the sum of its proper divisors (110804791774).

133493779490 is a wasteful number, since it uses less digits than its factorization.

133493779490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345962.

The product of its (nonzero) digits is 15431472, while the sum is 59.

The spelling of 133493779490 in words is "one hundred thirty-three billion, four hundred ninety-three million, seven hundred seventy-nine thousand, four hundred ninety".