616611551001 has 16 divisors (see below), whose sum is σ = 828664166400. Its totient is φ = 407816978688.

The previous prime is 616611550999. The next prime is 616611551021. The reversal of 616611551001 is 100155116616.

616611551001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 616611551001 - 2¹ = 616611550999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (616611551021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12857295 + ... + 12905163.

It is an arithmetic number, because the mean of its divisors is an integer number (51791510400).

Almost surely, 2^616611551001 is an apocalyptic number.

It is an amenable number.

616611551001 is a deficient number, since it is larger than the sum of its proper divisors (212052615399).

616611551001 is a wasteful number, since it uses less digits than its factorization.

616611551001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81808.

The product of its (nonzero) digits is 5400, while the sum is 33.

Adding to 616611551001 its reverse (100155116616), we get a palindrome (716766667617).

The spelling of 616611551001 in words is "six hundred sixteen billion, six hundred eleven million, five hundred fifty-one thousand, one".