1311615056155 has 8 divisors (see below), whose sum is σ = 1573945290000. Its totient is φ = 1049287229856.

The previous prime is 1311615056153. The next prime is 1311615056209. The reversal of 1311615056155 is 5516505161131.

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 1311615056155 - 2¹ = 1311615056153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311615056153) 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, 969736 + ... + 1887754.

It is an arithmetic number, because the mean of its divisors is an integer number (196743161250).

Almost surely, 2^{1311615056155} is an apocalyptic number.

1311615056155 is a deficient number, since it is larger than the sum of its proper divisors (262330233845).

1311615056155 is an equidigital number, since it uses as much as digits as its factorization.

1311615056155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203773.

The product of its (nonzero) digits is 67500, while the sum is 40.

The spelling of 1311615056155 in words is "one trillion, three hundred eleven billion, six hundred fifteen million, fifty-six thousand, one hundred fifty-five".