616954459615 has 16 divisors (see below), whose sum is σ = 797379621696. Its totient is φ = 455548780800.

The previous prime is 616954459579. The next prime is 616954459741. The reversal of 616954459615 is 516954459616.

It is a happy number.

It is not a de Polignac number, because 616954459615 - 2²⁷ = 616820241887 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 119235 + ... + 1117195.

It is an arithmetic number, because the mean of its divisors is an integer number (49836226356).

Almost surely, 2^616954459615 is an apocalyptic number.

616954459615 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

616954459615 is a deficient number, since it is larger than the sum of its proper divisors (180425162081).

616954459615 is a wasteful number, since it uses less digits than its factorization.

616954459615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007490.

The product of its digits is 34992000, while the sum is 61.

Subtracting from 616954459615 its reverse (516954459616), we obtain a palindrome (99999999999).

The spelling of 616954459615 in words is "six hundred sixteen billion, nine hundred fifty-four million, four hundred fifty-nine thousand, six hundred fifteen".