643624026654162 has 16 divisors (see below), whose sum is σ = 1322038541236032. Its totient is φ = 208742927563440.

The previous prime is 643624026654043. The next prime is 643624026654181. The reversal of 643624026654162 is 261456620426346.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1449603663414 + ... + 1449603663857.

It is an arithmetic number, because the mean of its divisors is an integer number (82627408827252).

Almost surely, 2^{643624026654162} is an apocalyptic number.

643624026654162 is an abundant number, since it is smaller than the sum of its proper divisors (678414514581870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

643624026654162 is a wasteful number, since it uses less digits than its factorization.

643624026654162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2899207327313.

The product of its (nonzero) digits is 59719680, while the sum is 57.

The spelling of 643624026654162 in words is "six hundred forty-three trillion, six hundred twenty-four billion, twenty-six million, six hundred fifty-four thousand, one hundred sixty-two".