61573473109 has 8 divisors (see below), whose sum is σ = 64821708000. Its totient is φ = 58325990832.

The previous prime is 61573473053. The next prime is 61573473131. The reversal of 61573473109 is 90137437516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61573473109 is a prime.

It is a super-2 number, since 2×61573473109² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61573473149) 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, 16174 + ... + 351295.

It is an arithmetic number, because the mean of its divisors is an integer number (8102713500).

Almost surely, 2^61573473109 is an apocalyptic number.

It is an amenable number.

61573473109 is a deficient number, since it is larger than the sum of its proper divisors (3248234891).

61573473109 is a wasteful number, since it uses less digits than its factorization.

61573473109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376307.

The product of its (nonzero) digits is 476280, while the sum is 46.

The spelling of 61573473109 in words is "sixty-one billion, five hundred seventy-three million, four hundred seventy-three thousand, one hundred nine".