61066056101505 has 64 divisors (see below), whose sum is σ = 120469052487168. Its totient is φ = 25722270167040.

The previous prime is 61066056101503. The next prime is 61066056101513. The reversal of 61066056101505 is 50510165066016.

It is not a de Polignac number, because 61066056101505 - 2¹ = 61066056101503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61066056101503) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39398616 + ... + 40919225.

It is an arithmetic number, because the mean of its divisors is an integer number (1882328945112).

Almost surely, 2^{61066056101505} is an apocalyptic number.

61066056101505 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61066056101505 is a deficient number, since it is larger than the sum of its proper divisors (59402996385663).

61066056101505 is a wasteful number, since it uses less digits than its factorization.

61066056101505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80318426.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 61066056101505 in words is "sixty-one trillion, sixty-six billion, fifty-six million, one hundred one thousand, five hundred five".