655540456144 has 60 divisors (see below), whose sum is σ = 1491819068064. Its totient is φ = 278218245312.

The previous prime is 655540456127. The next prime is 655540456147. The reversal of 655540456144 is 441654045556.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655540456147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3978222 + ... + 4139725.

Almost surely, 2^655540456144 is an apocalyptic number.

It is an amenable number.

655540456144 is an abundant number, since it is smaller than the sum of its proper divisors (836278611920).

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

655540456144 is a wasteful number, since it uses less digits than its factorization.

655540456144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8118072 (or 8118059 counting only the distinct ones).

The product of its (nonzero) digits is 5760000, while the sum is 49.

The spelling of 655540456144 in words is "six hundred fifty-five billion, five hundred forty million, four hundred fifty-six thousand, one hundred forty-four".