1361206666761 has 8 divisors (see below), whose sum is σ = 1831003658400. Its totient is φ = 899440393152.

The previous prime is 1361206666747. The next prime is 1361206666769. The reversal of 1361206666761 is 1676666021631.

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

It is not a de Polignac number, because 1361206666761 - 2¹⁰ = 1361206665737 is a prime.

It is a super-2 number, since 2×1361206666761² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1361206666769) 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, 2007679111 + ... + 2007679788.

It is an arithmetic number, because the mean of its divisors is an integer number (228875457300).

Almost surely, 2^{1361206666761} is an apocalyptic number.

It is an amenable number.

1361206666761 is a deficient number, since it is larger than the sum of its proper divisors (469796991639).

1361206666761 is a wasteful number, since it uses less digits than its factorization.

1361206666761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4015359015.

The product of its (nonzero) digits is 1959552, while the sum is 51.

The spelling of 1361206666761 in words is "one trillion, three hundred sixty-one billion, two hundred six million, six hundred sixty-six thousand, seven hundred sixty-one".