616406531424 has 48 divisors (see below), whose sum is σ = 1640232466992. Its totient is φ = 202654199808.

The previous prime is 616406531423. The next prime is 616406531431. The reversal of 616406531424 is 424135604616.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616406531423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43971769 + ... + 43985784.

It is an arithmetic number, because the mean of its divisors is an integer number (34171509729).

Almost surely, 2^616406531424 is an apocalyptic number.

It is an amenable number.

616406531424 is an abundant number, since it is smaller than the sum of its proper divisors (1023825935568).

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

616406531424 is a wasteful number, since it uses less digits than its factorization.

616406531424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87957639 (or 87957631 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 616406531424 in words is "six hundred sixteen billion, four hundred six million, five hundred thirty-one thousand, four hundred twenty-four".