135143400646 has 8 divisors (see below), whose sum is σ = 202898889504. Its totient is φ = 67510437480.

The previous prime is 135143400607. The next prime is 135143400731. The reversal of 135143400646 is 646004341531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30628665 + ... + 30633076.

It is an arithmetic number, because the mean of its divisors is an integer number (25362361188).

Almost surely, 2^135143400646 is an apocalyptic number.

135143400646 is a deficient number, since it is larger than the sum of its proper divisors (67755488858).

135143400646 is a wasteful number, since it uses less digits than its factorization.

135143400646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61262846.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 135143400646 in words is "one hundred thirty-five billion, one hundred forty-three million, four hundred thousand, six hundred forty-six".