1605610251140 has 48 divisors (see below), whose sum is σ = 3854163164544. Its totient is φ = 550395148800.

The previous prime is 1605610251131. The next prime is 1605610251191. The reversal of 1605610251140 is 411520165061.

It is a junction number, because it is equal to n+sod(n) for n = 1605610251097 and 1605610251106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262421 + ... + 1811100.

It is an arithmetic number, because the mean of its divisors is an integer number (80295065928).

Almost surely, 2^{1605610251140} is an apocalyptic number.

1605610251140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1605610251140 is an abundant number, since it is smaller than the sum of its proper divisors (2248552913404).

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

1605610251140 is a wasteful number, since it uses less digits than its factorization.

1605610251140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2079068 (or 2079066 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 1605610251140 in words is "one trillion, six hundred five billion, six hundred ten million, two hundred fifty-one thousand, one hundred forty".