1601742887442 has 128 divisors (see below), whose sum is σ = 3688503920640. Its totient is φ = 514908576000.

The previous prime is 1601742887401. The next prime is 1601742887453. The reversal of 1601742887442 is 2447882471061.

It is a happy number.

1601742887442 is a `hidden beast` number, since 1 + 6 + 0 + 174 + 28 + 8 + 7 + 442 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 452340192 + ... + 452343732.

It is an arithmetic number, because the mean of its divisors is an integer number (28816436880).

Almost surely, 2^{1601742887442} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1601742887442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1844251960320).

1601742887442 is an abundant number, since it is smaller than the sum of its proper divisors (2086761033198).

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

1601742887442 is a wasteful number, since it uses less digits than its factorization.

1601742887442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6257 (or 6251 counting only the distinct ones).

The product of its (nonzero) digits is 4816896, while the sum is 54.

The spelling of 1601742887442 in words is "one trillion, six hundred one billion, seven hundred forty-two million, eight hundred eighty-seven thousand, four hundred forty-two".