61545662136067 has 2 divisors, whose sum is σ = 61545662136068. Its totient is φ = 61545662136066.

The previous prime is 61545662135933. The next prime is 61545662136107. The reversal of 61545662136067 is 76063126654516.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61545662136067 is a prime.

It is a super-2 number, since 2×61545662136067² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61545662136967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30772831068033 + 30772831068034.

It is an arithmetic number, because the mean of its divisors is an integer number (30772831068034).

Almost surely, 2^{61545662136067} is an apocalyptic number.

61545662136067 is a deficient number, since it is larger than the sum of its proper divisors (1).

61545662136067 is an equidigital number, since it uses as much as digits as its factorization.

61545662136067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32659200, while the sum is 58.

The spelling of 61545662136067 in words is "sixty-one trillion, five hundred forty-five billion, six hundred sixty-two million, one hundred thirty-six thousand, sixty-seven".