133154605257 has 16 divisors (see below), whose sum is σ = 183395524608. Its totient is φ = 85845741840.

The previous prime is 133154605253. The next prime is 133154605267. The reversal of 133154605257 is 752506451331.

It is not a de Polignac number, because 133154605257 - 2² = 133154605253 is a prime.

It is a super-2 number, since 2×133154605257² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133154605253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370743 + ... + 635420.

It is an arithmetic number, because the mean of its divisors is an integer number (11462220288).

Almost surely, 2^133154605257 is an apocalyptic number.

It is an amenable number.

133154605257 is a deficient number, since it is larger than the sum of its proper divisors (50240919351).

133154605257 is a wasteful number, since it uses less digits than its factorization.

133154605257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007620.

The product of its (nonzero) digits is 378000, while the sum is 42.

The spelling of 133154605257 in words is "one hundred thirty-three billion, one hundred fifty-four million, six hundred five thousand, two hundred fifty-seven".