2055405660 has 96 divisors (see below), whose sum is σ = 7175250432. Its totient is φ = 427096320.

The previous prime is 2055405619. The next prime is 2055405701. The reversal of 2055405660 is 665045502.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2055405619) and next prime (2055405701).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217827 + ... + 227066.

It is an arithmetic number, because the mean of its divisors is an integer number (74742192).

Almost surely, 2^2055405660 is an apocalyptic number.

2055405660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2055405660 is an abundant number, since it is smaller than the sum of its proper divisors (5119844772).

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

2055405660 is a wasteful number, since it uses less digits than its factorization.

2055405660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444923 (or 444921 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 2055405660 is about 45336.5819179170. The cubic root of 2055405660 is about 1271.4496971860.

The spelling of 2055405660 in words is "two billion, fifty-five million, four hundred five thousand, six hundred sixty".