61505016411 has 16 divisors (see below), whose sum is σ = 82299305088. Its totient is φ = 40857120000.

The previous prime is 61505016401. The next prime is 61505016439. The reversal of 61505016411 is 11461050516.

It is not a de Polignac number, because 61505016411 - 2¹³ = 61505008219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61505016401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3676576 + ... + 3693266.

It is an arithmetic number, because the mean of its divisors is an integer number (5143706568).

Almost surely, 2^61505016411 is an apocalyptic number.

61505016411 is a deficient number, since it is larger than the sum of its proper divisors (20794288677).

61505016411 is a wasteful number, since it uses less digits than its factorization.

61505016411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21002.

The product of its (nonzero) digits is 3600, while the sum is 30.

Adding to 61505016411 its reverse (11461050516), we get a palindrome (72966066927).

The spelling of 61505016411 in words is "sixty-one billion, five hundred five million, sixteen thousand, four hundred eleven".