61275076769 has 2 divisors, whose sum is σ = 61275076770. Its totient is φ = 61275076768.

The previous prime is 61275076721. The next prime is 61275076781. The reversal of 61275076769 is 96767057216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49411510369 + 11863566400 = 222287^2 + 108920^2 .

It is a cyclic number.

It is not a de Polignac number, because 61275076769 - 2¹⁶ = 61275011233 is a prime.

It is a super-2 number, since 2×61275076769² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61275072769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30637538384 + 30637538385.

It is an arithmetic number, because the mean of its divisors is an integer number (30637538385).

Almost surely, 2^61275076769 is an apocalyptic number.

It is an amenable number.

61275076769 is a deficient number, since it is larger than the sum of its proper divisors (1).

61275076769 is an equidigital number, since it uses as much as digits as its factorization.

61275076769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6667920, while the sum is 56.

The spelling of 61275076769 in words is "sixty-one billion, two hundred seventy-five million, seventy-six thousand, seven hundred sixty-nine".