654621610515244 has 6 divisors (see below), whose sum is σ = 1145587818401684. Its totient is φ = 327310805257620.

The previous prime is 654621610515239. The next prime is 654621610515283. The reversal of 654621610515244 is 442515016126456.

It is a super-2 number, since 2×654621610515244² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 654621610515191 and 654621610515200.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81827701314402 + ... + 81827701314409.

Almost surely, 2^{654621610515244} is an apocalyptic number.

It is an amenable number.

654621610515244 is a deficient number, since it is larger than the sum of its proper divisors (490966207886440).

654621610515244 is a wasteful number, since it uses less digits than its factorization.

654621610515244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163655402628815 (or 163655402628813 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 52.

The spelling of 654621610515244 in words is "six hundred fifty-four trillion, six hundred twenty-one billion, six hundred ten million, five hundred fifteen thousand, two hundred forty-four".