133778805413 has 16 divisors (see below), whose sum is σ = 149943830400. Its totient is φ = 118298611200.

The previous prime is 133778805409. The next prime is 133778805451. The reversal of 133778805413 is 314508877331.

It is not a de Polignac number, because 133778805413 - 2² = 133778805409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133778805613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288113 + ... + 592086.

It is an arithmetic number, because the mean of its divisors is an integer number (9371489400).

Almost surely, 2^133778805413 is an apocalyptic number.

It is an amenable number.

133778805413 is a deficient number, since it is larger than the sum of its proper divisors (16165024987).

133778805413 is a wasteful number, since it uses less digits than its factorization.

133778805413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880588.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 133778805413 in words is "one hundred thirty-three billion, seven hundred seventy-eight million, eight hundred five thousand, four hundred thirteen".