2001497869061 has 8 divisors (see below), whose sum is σ = 2040283250424. Its totient is φ = 1962750312640.

The previous prime is 2001497869009. The next prime is 2001497869067. The reversal of 2001497869061 is 1609687941002.

It can be written as a sum of positive squares in 4 ways, for example, as 36471450625 + 1965026418436 = 190975^2 + 1401794^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2001497869061 - 2¹⁰ = 2001497868037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001497868994 and 2001497869012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001497869067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9349370 + ... + 9561051.

It is an arithmetic number, because the mean of its divisors is an integer number (255035406303).

Almost surely, 2^{2001497869061} is an apocalyptic number.

It is an amenable number.

2001497869061 is a deficient number, since it is larger than the sum of its proper divisors (38785381363).

2001497869061 is a wasteful number, since it uses less digits than its factorization.

2001497869061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18912471.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 2001497869061 in words is "two trillion, one billion, four hundred ninety-seven million, eight hundred sixty-nine thousand, sixty-one".