616554321406 has 4 divisors (see below), whose sum is σ = 924831482112. Its totient is φ = 308277160702.

The previous prime is 616554321391. The next prime is 616554321407. The reversal of 616554321406 is 604123455616.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616554321407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154138580350 + ... + 154138580353.

It is an arithmetic number, because the mean of its divisors is an integer number (231207870528).

Almost surely, 2^616554321406 is an apocalyptic number.

616554321406 is a deficient number, since it is larger than the sum of its proper divisors (308277160706).

616554321406 is a wasteful number, since it uses less digits than its factorization.

616554321406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308277160705.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 616554321406 in words is "six hundred sixteen billion, five hundred fifty-four million, three hundred twenty-one thousand, four hundred six".