645042119135 has 16 divisors (see below), whose sum is σ = 781963489440. Its totient is φ = 510761654400.

The previous prime is 645042119101. The next prime is 645042119143. The reversal of 645042119135 is 531911240546.

It is not a de Polignac number, because 645042119135 - 2⁸ = 645042118879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 645042119092 and 645042119101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1395401 + ... + 1799229.

It is an arithmetic number, because the mean of its divisors is an integer number (48872718090).

Almost surely, 2^645042119135 is an apocalyptic number.

645042119135 is a deficient number, since it is larger than the sum of its proper divisors (136921370305).

645042119135 is a wasteful number, since it uses less digits than its factorization.

645042119135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407098.

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 645042119135 in words is "six hundred forty-five billion, forty-two million, one hundred nineteen thousand, one hundred thirty-five".