133911657420 has 48 divisors (see below), whose sum is σ = 374995809888. Its totient is φ = 35705664000.

The previous prime is 133911657403. The next prime is 133911657461. The reversal of 133911657420 is 24756119331.

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, 416082 + ... + 664038.

It is an arithmetic number, because the mean of its divisors is an integer number (7812412706).

Almost surely, 2^133911657420 is an apocalyptic number.

133911657420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133911657420 is an abundant number, since it is smaller than the sum of its proper divisors (241084152468).

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

133911657420 is a wasteful number, since it uses less digits than its factorization.

133911657420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256970 (or 256968 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 133911657420 in words is "one hundred thirty-three billion, nine hundred eleven million, six hundred fifty-seven thousand, four hundred twenty".