16400620435 has 8 divisors (see below), whose sum is σ = 19692546480. Its totient is φ = 13112628384.

The previous prime is 16400620433. The next prime is 16400620487. The reversal of 16400620435 is 53402600461.

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 16400620435 - 2¹ = 16400620433 is a prime.

It is a super-3 number, since 3×16400620435³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16400620397 and 16400620406.

It is not an unprimeable number, because it can be changed into a prime (16400620433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 974317 + ... + 991006.

It is an arithmetic number, because the mean of its divisors is an integer number (2461568310).

Almost surely, 2^16400620435 is an apocalyptic number.

16400620435 is a deficient number, since it is larger than the sum of its proper divisors (3291926045).

16400620435 is a wasteful number, since it uses less digits than its factorization.

16400620435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966997.

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 16400620435 in words is "sixteen billion, four hundred million, six hundred twenty thousand, four hundred thirty-five".