1606261657461 has 16 divisors (see below), whose sum is σ = 2151648092160. Its totient is φ = 1065869556080.

The previous prime is 1606261657453. The next prime is 1606261657471. The reversal of 1606261657461 is 1647561626061.

It is a cyclic number.

It is not a de Polignac number, because 1606261657461 - 2³ = 1606261657453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606261657411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 859431 + ... + 1987748.

It is an arithmetic number, because the mean of its divisors is an integer number (134478005760).

Almost surely, 2^{1606261657461} is an apocalyptic number.

It is an amenable number.

1606261657461 is a deficient number, since it is larger than the sum of its proper divisors (545386434699).

1606261657461 is a wasteful number, since it uses less digits than its factorization.

1606261657461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2848056.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 1606261657461 in words is "one trillion, six hundred six billion, two hundred sixty-one million, six hundred fifty-seven thousand, four hundred sixty-one".