116401720713421 has 16 divisors (see below), whose sum is σ = 136843636946688. Its totient is φ = 97614076305600.

The previous prime is 116401720713409. The next prime is 116401720713431. The reversal of 116401720713421 is 124317027104611.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 116401720713421 - 2¹⁷ = 116401720582349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116401720713401) 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, 273492150 + ... + 273917431.

It is an arithmetic number, because the mean of its divisors is an integer number (8552727309168).

Almost surely, 2^{116401720713421} is an apocalyptic number.

116401720713421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

116401720713421 is a deficient number, since it is larger than the sum of its proper divisors (20441916233267).

116401720713421 is a wasteful number, since it uses less digits than its factorization.

116401720713421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547411092.

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 116401720713421 in words is "one hundred sixteen trillion, four hundred one billion, seven hundred twenty million, seven hundred thirteen thousand, four hundred twenty-one".