133748642778 has 16 divisors (see below), whose sum is σ = 267762408960. Its totient is φ = 44538693696.

The previous prime is 133748642737. The next prime is 133748642813. The reversal of 133748642778 is 877246847331.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11040250 + ... + 11052357.

It is an arithmetic number, because the mean of its divisors is an integer number (16735150560).

Almost surely, 2^133748642778 is an apocalyptic number.

133748642778 is an abundant number, since it is smaller than the sum of its proper divisors (134013766182).

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

133748642778 is a wasteful number, since it uses less digits than its factorization.

133748642778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22093621.

The product of its digits is 37933056, while the sum is 60.

The spelling of 133748642778 in words is "one hundred thirty-three billion, seven hundred forty-eight million, six hundred forty-two thousand, seven hundred seventy-eight".