13116451506261 has 8 divisors (see below), whose sum is σ = 17577376638624. Its totient is φ = 8699913689040.

The previous prime is 13116451506251. The next prime is 13116451506271. The reversal of 13116451506261 is 16260515461131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13116451506251) and next prime (13116451506271).

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

It is not a de Polignac number, because 13116451506261 - 2⁹ = 13116451505749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13116451506251) 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, 11096828095 + ... + 11096829276.

It is an arithmetic number, because the mean of its divisors is an integer number (2197172079828).

Almost surely, 2^{13116451506261} is an apocalyptic number.

It is an amenable number.

13116451506261 is a deficient number, since it is larger than the sum of its proper divisors (4460925132363).

13116451506261 is a wasteful number, since it uses less digits than its factorization.

13116451506261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22193657571.

The product of its (nonzero) digits is 129600, while the sum is 42.

Adding to 13116451506261 its reverse (16260515461131), we get a palindrome (29376966967392).

The spelling of 13116451506261 in words is "thirteen trillion, one hundred sixteen billion, four hundred fifty-one million, five hundred six thousand, two hundred sixty-one".