616621494630 has 64 divisors (see below), whose sum is σ = 1508715952128. Its totient is φ = 161251706880.

The previous prime is 616621494581. The next prime is 616621494631. The reversal of 616621494630 is 36494126616.

It is a self number, because there is not a number n which added to its sum of digits gives 616621494630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616621494631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 239611 + ... + 1136070.

It is an arithmetic number, because the mean of its divisors is an integer number (23573686752).

Almost surely, 2^616621494630 is an apocalyptic number.

616621494630 is an abundant number, since it is smaller than the sum of its proper divisors (892094457498).

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

616621494630 is a wasteful number, since it uses less digits than its factorization.

616621494630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375981.

The product of its (nonzero) digits is 1119744, while the sum is 48.

The spelling of 616621494630 in words is "six hundred sixteen billion, six hundred twenty-one million, four hundred ninety-four thousand, six hundred thirty".