655540121452 has 12 divisors (see below), whose sum is σ = 1158553581696. Its totient is φ = 324524812400.

The previous prime is 655540121413. The next prime is 655540121479. The reversal of 655540121452 is 254121045556.

655540121452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 811311628 + ... + 811312435.

It is an arithmetic number, because the mean of its divisors is an integer number (96546131808).

Almost surely, 2^655540121452 is an apocalyptic number.

It is an amenable number.

655540121452 is a deficient number, since it is larger than the sum of its proper divisors (503013460244).

655540121452 is a wasteful number, since it uses less digits than its factorization.

655540121452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622624168 (or 1622624166 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 40.

The spelling of 655540121452 in words is "six hundred fifty-five billion, five hundred forty million, one hundred twenty-one thousand, four hundred fifty-two".