133751028920 has 32 divisors (see below), whose sum is σ = 310647553920. Its totient is φ = 51774591360.

The previous prime is 133751028899. The next prime is 133751028923. The reversal of 133751028920 is 29820157331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133751028923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53930627 + ... + 53933106.

It is an arithmetic number, because the mean of its divisors is an integer number (9707736060).

Almost surely, 2^133751028920 is an apocalyptic number.

133751028920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133751028920 is an abundant number, since it is smaller than the sum of its proper divisors (176896525000).

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

133751028920 is a wasteful number, since it uses less digits than its factorization.

133751028920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107863775 (or 107863771 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 133751028920 in words is "one hundred thirty-three billion, seven hundred fifty-one million, twenty-eight thousand, nine hundred twenty".