1606255251840 has 192 divisors, whose sum is σ = 5616811886400. Its totient is φ = 422912655360.

The previous prime is 1606255251817. The next prime is 1606255251863. The reversal of 1606255251840 is 481525526061.

1606255251840 is a `hidden beast` number, since 1 + 6 + 0 + 6 + 2 + 552 + 51 + 8 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (1606255251817) and next prime (1606255251863).

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1309921 + ... + 2220000.

It is an arithmetic number, because the mean of its divisors is an integer number (29254228575).

Almost surely, 2^{1606255251840} is an apocalyptic number.

1606255251840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1606255251840 is an abundant number, since it is smaller than the sum of its proper divisors (4010556634560).

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

1606255251840 is a wasteful number, since it uses less digits than its factorization.

1606255251840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530025 (or 3530010 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The spelling of 1606255251840 in words is "one trillion, six hundred six billion, two hundred fifty-five million, two hundred fifty-one thousand, eight hundred forty".