2001011020617 has 32 divisors (see below), whose sum is σ = 3058388704000. Its totient is φ = 1139975036928.

The previous prime is 2001011020607. The next prime is 2001011020621. The reversal of 2001011020617 is 7160201101002.

It is a happy number.

It is not a de Polignac number, because 2001011020617 - 2⁸ = 2001011020361 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 2001011020593 and 2001011020602.

It is not an unprimeable number, because it can be changed into a prime (2001011020607) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54868653 + ... + 54905109.

It is an arithmetic number, because the mean of its divisors is an integer number (95574647000).

Almost surely, 2^{2001011020617} is an apocalyptic number.

It is an amenable number.

2001011020617 is a deficient number, since it is larger than the sum of its proper divisors (1057377683383).

2001011020617 is a wasteful number, since it uses less digits than its factorization.

2001011020617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44305.

The product of its (nonzero) digits is 168, while the sum is 21.

Adding to 2001011020617 its reverse (7160201101002), we get a palindrome (9161212121619).

The spelling of 2001011020617 in words is "two trillion, one billion, eleven million, twenty thousand, six hundred seventeen".