15601444006040 has 64 divisors (see below), whose sum is σ = 35368780356000. Its totient is φ = 6193405025280.

The previous prime is 15601444006037. The next prime is 15601444006091. The reversal of 15601444006040 is 4060044410651.

It is a congruent number.

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, 14659130 + ... + 15687350.

Almost surely, 2^{15601444006040} is an apocalyptic number.

15601444006040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15601444006040 is an abundant number, since it is smaller than the sum of its proper divisors (19767336349960).

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

15601444006040 is a wasteful number, since it uses less digits than its factorization.

15601444006040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031100 (or 1031096 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

Adding to 15601444006040 its reverse (4060044410651), we get a palindrome (19661488416691).

The spelling of 15601444006040 in words is "fifteen trillion, six hundred one billion, four hundred forty-four million, six thousand, forty".