654545215650540 has 48 divisors (see below), whose sum is σ = 1912410369209088. Its totient is φ = 166956460803264.

The previous prime is 654545215650539. The next prime is 654545215650581. The reversal of 654545215650540 is 45056512545456.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237154062262 + ... + 237154065021.

It is an arithmetic number, because the mean of its divisors is an integer number (39841882691856).

Almost surely, 2^{654545215650540} is an apocalyptic number.

654545215650540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

654545215650540 is an abundant number, since it is smaller than the sum of its proper divisors (1257865153558548).

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

654545215650540 is a wasteful number, since it uses less digits than its factorization.

654545215650540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474308127318 (or 474308127316 counting only the distinct ones).

The product of its (nonzero) digits is 72000000, while the sum is 57.

The spelling of 654545215650540 in words is "six hundred fifty-four trillion, five hundred forty-five billion, two hundred fifteen million, six hundred fifty thousand, five hundred forty".