61545662136066 has 16 divisors (see below), whose sum is σ = 128443120979904. Its totient is φ = 19623254594064.

The previous prime is 61545662135933. The next prime is 61545662136067. The reversal of 61545662136066 is 66063126654516.

It is a junction number, because it is equal to n+sod(n) for n = 61545662135997 and 61545662136015.

It is not an unprimeable number, because it can be changed into a prime (61545662136067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222991529341 + ... + 222991529616.

It is an arithmetic number, because the mean of its divisors is an integer number (8027695061244).

Almost surely, 2^{61545662136066} is an apocalyptic number.

61545662136066 is an abundant number, since it is smaller than the sum of its proper divisors (66897458843838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61545662136066 is a wasteful number, since it uses less digits than its factorization.

61545662136066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445983058985.

The product of its (nonzero) digits is 27993600, while the sum is 57.

The spelling of 61545662136066 in words is "sixty-one trillion, five hundred forty-five billion, six hundred sixty-two million, one hundred thirty-six thousand, sixty-six".