133154408757478 has 4 divisors (see below), whose sum is σ = 199731613136220. Its totient is φ = 66577204378738.

The previous prime is 133154408757451. The next prime is 133154408757481. The reversal of 133154408757478 is 874757804451331.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33288602189368 + ... + 33288602189371.

It is an arithmetic number, because the mean of its divisors is an integer number (49932903284055).

Almost surely, 2^{133154408757478} is an apocalyptic number.

133154408757478 is a deficient number, since it is larger than the sum of its proper divisors (66577204378742).

133154408757478 is an equidigital number, since it uses as much as digits as its factorization.

133154408757478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66577204378741.

The product of its (nonzero) digits is 316108800, while the sum is 67.

The spelling of 133154408757478 in words is "one hundred thirty-three trillion, one hundred fifty-four billion, four hundred eight million, seven hundred fifty-seven thousand, four hundred seventy-eight".