656153303550 has 96 divisors (see below), whose sum is σ = 1726909113600. Its totient is φ = 164306204160.

The previous prime is 656153303521. The next prime is 656153303557. The reversal of 656153303550 is 55303351656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656153303557) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 826381 + ... + 1412519.

It is an arithmetic number, because the mean of its divisors is an integer number (17988636600).

Almost surely, 2^656153303550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 656153303550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (863454556800).

656153303550 is an abundant number, since it is smaller than the sum of its proper divisors (1070755810050).

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

656153303550 is a wasteful number, since it uses less digits than its factorization.

656153303550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586610 (or 586605 counting only the distinct ones).

The product of its (nonzero) digits is 607500, while the sum is 42.

The spelling of 656153303550 in words is "six hundred fifty-six billion, one hundred fifty-three million, three hundred three thousand, five hundred fifty".