61452115069 has 2 divisors, whose sum is σ = 61452115070. Its totient is φ = 61452115068.

The previous prime is 61452115019. The next prime is 61452115073. The reversal of 61452115069 is 96051125416.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61411282969 + 40832100 = 247813^2 + 6390^2 .

It is a cyclic number.

It is not a de Polignac number, because 61452115069 - 2¹⁵ = 61452082301 is a prime.

It is a super-2 number, since 2×61452115069² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61452115009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30726057534 + 30726057535.

It is an arithmetic number, because the mean of its divisors is an integer number (30726057535).

Almost surely, 2^61452115069 is an apocalyptic number.

It is an amenable number.

61452115069 is a deficient number, since it is larger than the sum of its proper divisors (1).

61452115069 is an equidigital number, since it uses as much as digits as its factorization.

61452115069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 61452115069 in words is "sixty-one billion, four hundred fifty-two million, one hundred fifteen thousand, sixty-nine".