1611001655005 has 16 divisors (see below), whose sum is σ = 1961832096000. Its totient is φ = 1269740545920.

The previous prime is 1611001654987. The next prime is 1611001655047. The reversal of 1611001655005 is 5005561001161.

It is not a de Polignac number, because 1611001655005 - 2²³ = 1610993266397 is a prime.

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, 1125240 + ... + 2118529.

It is an arithmetic number, because the mean of its divisors is an integer number (122614506000).

Almost surely, 2^{1611001655005} is an apocalyptic number.

It is an amenable number.

1611001655005 is a deficient number, since it is larger than the sum of its proper divisors (350830440995).

1611001655005 is a wasteful number, since it uses less digits than its factorization.

1611001655005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3245244.

The product of its (nonzero) digits is 4500, while the sum is 31.

Adding to 1611001655005 its reverse (5005561001161), we get a palindrome (6616562656166).

The spelling of 1611001655005 in words is "one trillion, six hundred eleven billion, one million, six hundred fifty-five thousand, five".