61612123 has 2 divisors, whose sum is σ = 61612124. Its totient is φ = 61612122.

The previous prime is 61612099. The next prime is 61612139. The reversal of 61612123 is 32121616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61612123 - 2²¹ = 59514971 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 61612094 and 61612103.

It is not a weakly prime, because it can be changed into another prime (61612183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30806061 + 30806062.

It is an arithmetic number, because the mean of its divisors is an integer number (30806062).

Almost surely, 2^61612123 is an apocalyptic number.

61612123 is a deficient number, since it is larger than the sum of its proper divisors (1).

61612123 is an equidigital number, since it uses as much as digits as its factorization.

61612123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 22.

The square root of 61612123 is about 7849.3390167580. The cubic root of 61612123 is about 394.9620708119.

Adding to 61612123 its reverse (32121616), we get a palindrome (93733739).

The spelling of 61612123 in words is "sixty-one million, six hundred twelve thousand, one hundred twenty-three".