61016013 has 6 divisors (see below), whose sum is σ = 88134254. Its totient is φ = 40677336.

The previous prime is 61016003. The next prime is 61016017. The reversal of 61016013 is 31061016.

61016013 is a `hidden beast` number, since 61 + 0 + 1 + 601 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 36036009 + 24980004 = 6003^2 + 4998^2 .

It is not a de Polignac number, because 61016013 - 2¹⁴ = 60999629 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 (61016017) 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, 3389770 + ... + 3389787.

Almost surely, 2^61016013 is an apocalyptic number.

It is an amenable number.

61016013 is a deficient number, since it is larger than the sum of its proper divisors (27118241).

61016013 is a wasteful number, since it uses less digits than its factorization.

61016013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6779563 (or 6779560 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 61016013 is about 7811.2747359186. The cubic root of 61016013 is about 393.6841607225.

Adding to 61016013 its reverse (31061016), we get a palindrome (92077029).

The spelling of 61016013 in words is "sixty-one million, sixteen thousand, thirteen".