1455661136779 has 16 divisors (see below), whose sum is σ = 1533548206080. Its totient is φ = 1377901942560.

The previous prime is 1455661136773. The next prime is 1455661136791. The reversal of 1455661136779 is 9776311665541.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1455661136779 - 2¹⁵ = 1455661104011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1455661136773) 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, 164161704 + ... + 164170570.

It is an arithmetic number, because the mean of its divisors is an integer number (95846762880).

Almost surely, 2^{1455661136779} is an apocalyptic number.

1455661136779 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1455661136779 is a deficient number, since it is larger than the sum of its proper divisors (77887069301).

1455661136779 is a wasteful number, since it uses less digits than its factorization.

1455661136779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15090.

The product of its digits is 28576800, while the sum is 61.

The spelling of 1455661136779 in words is "one trillion, four hundred fifty-five billion, six hundred sixty-one million, one hundred thirty-six thousand, seven hundred seventy-nine".