61268042501 has 2 divisors, whose sum is σ = 61268042502. Its totient is φ = 61268042500.

The previous prime is 61268042491. The next prime is 61268042519. The reversal of 61268042501 is 10524086216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50714589601 + 10553452900 = 225199^2 + 102730^2 .

It is a cyclic number.

It is not a de Polignac number, because 61268042501 - 2¹⁰ = 61268041477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61268044501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30634021250 + 30634021251.

It is an arithmetic number, because the mean of its divisors is an integer number (30634021251).

Almost surely, 2^61268042501 is an apocalyptic number.

It is an amenable number.

61268042501 is a deficient number, since it is larger than the sum of its proper divisors (1).

61268042501 is an equidigital number, since it uses as much as digits as its factorization.

61268042501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 61268042501 in words is "sixty-one billion, two hundred sixty-eight million, forty-two thousand, five hundred one".