61610000061 has 16 divisors (see below), whose sum is σ = 83628808128. Its totient is φ = 40334448000.

The previous prime is 61610000059. The next prime is 61610000063. The reversal of 61610000061 is 16000001616.

It is an interprime number because it is at equal distance from previous prime (61610000059) and next prime (61610000063).

It is not a de Polignac number, because 61610000061 - 2¹ = 61610000059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61609999992 and 61610000037.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61610000063) 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, 159915 + ... + 385736.

It is an arithmetic number, because the mean of its divisors is an integer number (5226800508).

Almost surely, 2^61610000061 is an apocalyptic number.

61610000061 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

61610000061 is a deficient number, since it is larger than the sum of its proper divisors (22018808067).

61610000061 is a wasteful number, since it uses less digits than its factorization.

61610000061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546332.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 61610000061 its reverse (16000001616), we get a palindrome (77610001677).

The spelling of 61610000061 in words is "sixty-one billion, six hundred ten million, sixty-one", and thus it is an aban number.