645042624331154 has 32 divisors (see below), whose sum is σ = 1150622572018176. Its totient is φ = 265459991509440.

The previous prime is 645042624331151. The next prime is 645042624331177. The reversal of 645042624331154 is 451133426240546.

It is not an unprimeable number, because it can be changed into a prime (645042624331151) 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, 9248153237 + ... + 9248222984.

It is an arithmetic number, because the mean of its divisors is an integer number (35956955375568).

Almost surely, 2^{645042624331154} is an apocalyptic number.

645042624331154 is a deficient number, since it is larger than the sum of its proper divisors (505579947687022).

645042624331154 is a wasteful number, since it uses less digits than its factorization.

645042624331154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18496376330.

The product of its (nonzero) digits is 8294400, while the sum is 50.

The spelling of 645042624331154 in words is "six hundred forty-five trillion, forty-two billion, six hundred twenty-four million, three hundred thirty-one thousand, one hundred fifty-four".