55616061506 has 4 divisors (see below), whose sum is σ = 83424092262. Its totient is φ = 27808030752.

The previous prime is 55616061499. The next prime is 55616061509. The reversal of 55616061506 is 60516061655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 55299755281 + 316306225 = 235159^2 + 17785^2 .

It is not an unprimeable number, because it can be changed into a prime (55616061509) 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 as a sum of consecutive naturals, namely, 13904015375 + ... + 13904015378.

Almost surely, 2^55616061506 is an apocalyptic number.

55616061506 is a deficient number, since it is larger than the sum of its proper divisors (27808030756).

55616061506 is a wasteful number, since it uses less digits than its factorization.

55616061506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27808030755.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 55616061506 in words is "fifty-five billion, six hundred sixteen million, sixty-one thousand, five hundred six".