61123525345043 has 4 divisors (see below), whose sum is σ = 69855457537200. Its totient is φ = 52391593152888.

The previous prime is 61123525345039. The next prime is 61123525345081. The reversal of 61123525345043 is 34054352532116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61123525345043 - 2² = 61123525345039 is a prime.

It is a super-2 number, since 2×61123525345043² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61123525344985 and 61123525345003.

It is not an unprimeable number, because it can be changed into a prime (61123525345343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4365966096068 + ... + 4365966096081.

It is an arithmetic number, because the mean of its divisors is an integer number (17463864384300).

Almost surely, 2^{61123525345043} is an apocalyptic number.

61123525345043 is a deficient number, since it is larger than the sum of its proper divisors (8731932192157).

61123525345043 is an equidigital number, since it uses as much as digits as its factorization.

61123525345043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8731932192156.

The product of its (nonzero) digits is 1296000, while the sum is 44.

Adding to 61123525345043 its reverse (34054352532116), we get a palindrome (95177877877159).

The spelling of 61123525345043 in words is "sixty-one trillion, one hundred twenty-three billion, five hundred twenty-five million, three hundred forty-five thousand, forty-three".