61190581069 has 2 divisors, whose sum is σ = 61190581070. Its totient is φ = 61190581068.

The previous prime is 61190581061. The next prime is 61190581181. The reversal of 61190581069 is 96018509116.

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., 43378475625 + 17812105444 = 208275^2 + 133462^2 .

It is a cyclic number.

It is not a de Polignac number, because 61190581069 - 2³ = 61190581061 is a prime.

It is a super-2 number, since 2×61190581069² (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 (61190581061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30595290534 + 30595290535.

It is an arithmetic number, because the mean of its divisors is an integer number (30595290535).

Almost surely, 2^61190581069 is an apocalyptic number.

It is an amenable number.

61190581069 is a deficient number, since it is larger than the sum of its proper divisors (1).

61190581069 is an equidigital number, since it uses as much as digits as its factorization.

61190581069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 46.

The spelling of 61190581069 in words is "sixty-one billion, one hundred ninety million, five hundred eighty-one thousand, sixty-nine".