616426203440 has 80 divisors (see below), whose sum is σ = 1543745765376. Its totient is φ = 228241939200.

The previous prime is 616426203433. The next prime is 616426203451. The reversal of 616426203440 is 44302624616.

616426203440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 616426203394 and 616426203403.

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, 5346416 + ... + 5460495.

Almost surely, 2^616426203440 is an apocalyptic number.

It is an amenable number.

616426203440 is an abundant number, since it is smaller than the sum of its proper divisors (927319561936).

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

616426203440 is a wasteful number, since it uses less digits than its factorization.

616426203440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10806978 (or 10806972 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 616426203440 in words is "six hundred sixteen billion, four hundred twenty-six million, two hundred three thousand, four hundred forty".