655229477448 has 960 divisors, whose sum is σ = 2402672025600. Its totient is φ = 165151042560.

The previous prime is 655229477393. The next prime is 655229477503. The reversal of 655229477448 is 844774922556.

655229477448 is a `hidden beast` number, since 6 + 552 + 2 + 9 + 4 + 7 + 74 + 4 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (655229477393) and next prime (655229477503).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 1520253793 + ... + 1520254223.

It is an arithmetic number, because the mean of its divisors is an integer number (2502783360).

Almost surely, 2^655229477448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655229477448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1201336012800).

655229477448 is an abundant number, since it is smaller than the sum of its proper divisors (1747442548152).

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

655229477448 is a wasteful number, since it uses less digits than its factorization.

655229477448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 612 counting only the distinct ones).

The product of its digits is 135475200, while the sum is 63.

The spelling of 655229477448 in words is "six hundred fifty-five billion, two hundred twenty-nine million, four hundred seventy-seven thousand, four hundred forty-eight".