616631446400 has 48 divisors (see below), whose sum is σ = 1523272377840. Its totient is φ = 246652577280.

The previous prime is 616631446393. The next prime is 616631446489. The reversal of 616631446400 is 4644136616.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 96345464 + ... + 96351863.

It is an arithmetic number, because the mean of its divisors is an integer number (31734841205).

Almost surely, 2^616631446400 is an apocalyptic number.

It is an amenable number.

616631446400 is an abundant number, since it is smaller than the sum of its proper divisors (906640931440).

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

616631446400 is a wasteful number, since it uses less digits than its factorization.

616631446400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192697351 (or 192697334 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 616631446400 in words is "six hundred sixteen billion, six hundred thirty-one million, four hundred forty-six thousand, four hundred".