61452803513 has 2 divisors, whose sum is σ = 61452803514. Its totient is φ = 61452803512.

The previous prime is 61452803507. The next prime is 61452803543. The reversal of 61452803513 is 31530825416.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47738754064 + 13714049449 = 218492^2 + 117107^2 .

It is a cyclic number.

It is not a de Polignac number, because 61452803513 - 2²⁴ = 61436026297 is a prime.

It is not a weakly prime, because it can be changed into another prime (61452803543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30726401756 + 30726401757.

It is an arithmetic number, because the mean of its divisors is an integer number (30726401757).

Almost surely, 2^61452803513 is an apocalyptic number.

It is an amenable number.

61452803513 is a deficient number, since it is larger than the sum of its proper divisors (1).

61452803513 is an equidigital number, since it uses as much as digits as its factorization.

61452803513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 61452803513 in words is "sixty-one billion, four hundred fifty-two million, eight hundred three thousand, five hundred thirteen".