61007214861 has 6 divisors (see below), whose sum is σ = 88121532590. Its totient is φ = 40671476568.

The previous prime is 61007214859. The next prime is 61007214889. The reversal of 61007214861 is 16841270016.

It is a happy number.

61007214861 is a `hidden beast` number, since 6 + 100 + 72 + 1 + 486 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 33514258761 + 27492956100 = 183069^2 + 165810^2 .

It is not a de Polignac number, because 61007214861 - 2¹ = 61007214859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61007214811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3389289706 + ... + 3389289723.

Almost surely, 2^61007214861 is an apocalyptic number.

It is an amenable number.

61007214861 is a deficient number, since it is larger than the sum of its proper divisors (27114317729).

61007214861 is a wasteful number, since it uses less digits than its factorization.

61007214861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6778579435 (or 6778579432 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

Adding to 61007214861 its reverse (16841270016), we get a palindrome (77848484877).

The spelling of 61007214861 in words is "sixty-one billion, seven million, two hundred fourteen thousand, eight hundred sixty-one".