1351116116661 has 8 divisors (see below), whose sum is σ = 1801498135840. Its totient is φ = 900739087632.

The previous prime is 1351116116641. The next prime is 1351116116671. The reversal of 1351116116661 is 1666116111531.

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

It is a de Polignac number, because none of the positive numbers 2^k-1351116116661 is a prime.

It is a super-2 number, since 2×1351116116661² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351116116611) 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, 561946 + ... + 1737243.

It is an arithmetic number, because the mean of its divisors is an integer number (225187266980).

Almost surely, 2^{1351116116661} is an apocalyptic number.

It is an amenable number.

1351116116661 is a deficient number, since it is larger than the sum of its proper divisors (450382019179).

1351116116661 is a wasteful number, since it uses less digits than its factorization.

1351116116661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495075.

The product of its digits is 19440, while the sum is 39.

The spelling of 1351116116661 in words is "one trillion, three hundred fifty-one billion, one hundred sixteen million, one hundred sixteen thousand, six hundred sixty-one".