654557849542 has 4 divisors (see below), whose sum is σ = 981836774316. Its totient is φ = 327278924770.

The previous prime is 654557849507. The next prime is 654557849549. The reversal of 654557849542 is 245948755456.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654557849549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163639462384 + ... + 163639462387.

It is an arithmetic number, because the mean of its divisors is an integer number (245459193579).

Almost surely, 2^654557849542 is an apocalyptic number.

654557849542 is a deficient number, since it is larger than the sum of its proper divisors (327278924774).

654557849542 is a wasteful number, since it uses less digits than its factorization.

654557849542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327278924773.

The product of its digits is 241920000, while the sum is 64.

The spelling of 654557849542 in words is "six hundred fifty-four billion, five hundred fifty-seven million, eight hundred forty-nine thousand, five hundred forty-two".