655510001550 has 96 divisors (see below), whose sum is σ = 1698332942592. Its totient is φ = 167006695680.

The previous prime is 655510001533. The next prime is 655510001593. The reversal of 655510001550 is 55100015556.

655510001550 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2845797 + ... + 3067503.

It is an arithmetic number, because the mean of its divisors is an integer number (17690968152).

Almost surely, 2^655510001550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655510001550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (849166471296).

655510001550 is an abundant number, since it is smaller than the sum of its proper divisors (1042822941042).

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

655510001550 is a wasteful number, since it uses less digits than its factorization.

655510001550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222602 (or 222597 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 33.

The spelling of 655510001550 in words is "six hundred fifty-five billion, five hundred ten million, one thousand, five hundred fifty".