654201543623 has 4 divisors (see below), whose sum is σ = 654203350080. Its totient is φ = 654199737168.

The previous prime is 654201543599. The next prime is 654201543643. The reversal of 654201543623 is 326345102456.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 654201543623 - 2¹² = 654201539527 is a prime.

It is a super-2 number, since 2×654201543623² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654201543643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151415 + ... + 1153832.

It is an arithmetic number, because the mean of its divisors is an integer number (163550837520).

Almost surely, 2^654201543623 is an apocalyptic number.

654201543623 is a deficient number, since it is larger than the sum of its proper divisors (1806457).

654201543623 is a wasteful number, since it uses less digits than its factorization.

654201543623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806456.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 654201543623 in words is "six hundred fifty-four billion, two hundred one million, five hundred forty-three thousand, six hundred twenty-three".