61550051005 has 16 divisors (see below), whose sum is σ = 75712127040. Its totient is φ = 48009403008.

The previous prime is 61550050987. The next prime is 61550051009. The reversal of 61550051005 is 50015005516.

It is a cyclic number.

It is not a de Polignac number, because 61550051005 - 2⁹ = 61550050493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61550051009) 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, 133200 + ... + 375289.

It is an arithmetic number, because the mean of its divisors is an integer number (4732007940).

Almost surely, 2^61550051005 is an apocalyptic number.

It is an amenable number.

61550051005 is a deficient number, since it is larger than the sum of its proper divisors (14162076035).

61550051005 is a wasteful number, since it uses less digits than its factorization.

61550051005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509100.

The product of its (nonzero) digits is 3750, while the sum is 28.

The spelling of 61550051005 in words is "sixty-one billion, five hundred fifty million, fifty-one thousand, five".