135400449023 has 16 divisors (see below), whose sum is σ = 155523899904. Its totient is φ = 115472783520.

The previous prime is 135400449017. The next prime is 135400449053. The reversal of 135400449023 is 320944004531.

It is a Cunningham number, because it is equal to 367968²-1.

It is a cyclic number.

It is not a de Polignac number, because 135400449023 - 2⁴ = 135400449007 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 (135400449053) 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, 2549486 + ... + 2602052.

It is an arithmetic number, because the mean of its divisors is an integer number (9720243744).

Almost surely, 2^135400449023 is an apocalyptic number.

135400449023 is a deficient number, since it is larger than the sum of its proper divisors (20123450881).

135400449023 is a wasteful number, since it uses less digits than its factorization.

135400449023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54422.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 135400449023 in words is "one hundred thirty-five billion, four hundred million, four hundred forty-nine thousand, twenty-three".