1791138719355 has 16 divisors (see below), whose sum is σ = 2865875281920. Its totient is φ = 955256206688.

The previous prime is 1791138719327. The next prime is 1791138719437. The reversal of 1791138719355 is 5539178311971.

It is a cyclic number.

It is not a de Polignac number, because 1791138719355 - 2⁹ = 1791138718843 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256965 + ... + 1910054.

It is an arithmetic number, because the mean of its divisors is an integer number (179117205120).

Almost surely, 2^{1791138719355} is an apocalyptic number.

1791138719355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1791138719355 is a deficient number, since it is larger than the sum of its proper divisors (1074736562565).

1791138719355 is a wasteful number, since it uses less digits than its factorization.

1791138719355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222130.

The product of its digits is 7144200, while the sum is 60.

The spelling of 1791138719355 in words is "one trillion, seven hundred ninety-one billion, one hundred thirty-eight million, seven hundred nineteen thousand, three hundred fifty-five".