1655001606550 has 48 divisors (see below), whose sum is σ = 3185634423312. Its totient is φ = 639191779200.

The previous prime is 1655001606523. The next prime is 1655001606553. The reversal of 1655001606550 is 556061005561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1655001606553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3172137 + ... + 3656836.

It is an arithmetic number, because the mean of its divisors is an integer number (66367383819).

Almost surely, 2^{1655001606550} is an apocalyptic number.

1655001606550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1655001606550 is a deficient number, since it is larger than the sum of its proper divisors (1530632816762).

1655001606550 is a wasteful number, since it uses less digits than its factorization.

1655001606550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6829153 (or 6829148 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 1655001606550 in words is "one trillion, six hundred fifty-five billion, one million, six hundred six thousand, five hundred fifty".