61472183509 has 16 divisors (see below), whose sum is σ = 70293795264. Its totient is φ = 53252841600.

The previous prime is 61472183497. The next prime is 61472183527. The reversal of 61472183509 is 90538127416.

It is a cyclic number.

It is not a de Polignac number, because 61472183509 - 2⁵ = 61472183477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61472183569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1565514 + ... + 1604299.

It is an arithmetic number, because the mean of its divisors is an integer number (4393362204).

It is a 1-persistent number, because it is pandigital, but 2⋅61472183509 = 122944367018 is not.

Almost surely, 2^61472183509 is an apocalyptic number.

It is an amenable number.

61472183509 is a deficient number, since it is larger than the sum of its proper divisors (8821611755).

61472183509 is a wasteful number, since it uses less digits than its factorization.

61472183509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3169908.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 61472183509 in words is "sixty-one billion, four hundred seventy-two million, one hundred eighty-three thousand, five hundred nine".