133156533450 has 48 divisors (see below), whose sum is σ = 330405209856. Its totient is φ = 35489376000.

The previous prime is 133156533361. The next prime is 133156533493. The reversal of 133156533450 is 54335651331.

It is a junction number, because it is equal to n+sod(n) for n = 133156533399 and 133156533408.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43975 + ... + 517925.

It is an arithmetic number, because the mean of its divisors is an integer number (6883441872).

Almost surely, 2^133156533450 is an apocalyptic number.

133156533450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133156533450 is an abundant number, since it is smaller than the sum of its proper divisors (197248676406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133156533450 is a wasteful number, since it uses less digits than its factorization.

133156533450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475839 (or 475834 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 39.

The spelling of 133156533450 in words is "one hundred thirty-three billion, one hundred fifty-six million, five hundred thirty-three thousand, four hundred fifty".