16401235236464 has 40 divisors (see below), whose sum is σ = 34224102642240. Its totient is φ = 7569293338368.

The previous prime is 16401235236461. The next prime is 16401235236497. The reversal of 16401235236464 is 46463253210461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16401235236461) 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, 475097 + ... + 5747015.

It is an arithmetic number, because the mean of its divisors is an integer number (855602566056).

Almost surely, 2^{16401235236464} is an apocalyptic number.

It is an amenable number.

16401235236464 is an abundant number, since it is smaller than the sum of its proper divisors (17822867405776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16401235236464 is a wasteful number, since it uses less digits than its factorization.

16401235236464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5286897 (or 5286891 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 16401235236464 in words is "sixteen trillion, four hundred one billion, two hundred thirty-five million, two hundred thirty-six thousand, four hundred sixty-four".