61571472265 has 8 divisors (see below), whose sum is σ = 75882679560. Its totient is φ = 47925902592.

The previous prime is 61571472247. The next prime is 61571472283. The reversal of 61571472265 is 56227417516.

It is an interprime number because it is at equal distance from previous prime (61571472247) and next prime (61571472283).

It can be written as a sum of positive squares in 4 ways, for example, as 33033789504 + 28537682761 = 181752^2 + 168931^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 61571472265 - 2¹⁷ = 61571341193 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166409200 + ... + 166409569.

It is an arithmetic number, because the mean of its divisors is an integer number (9485334945).

Almost surely, 2^61571472265 is an apocalyptic number.

It is an amenable number.

61571472265 is a deficient number, since it is larger than the sum of its proper divisors (14311207295).

61571472265 is a wasteful number, since it uses less digits than its factorization.

61571472265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332818811.

The product of its digits is 705600, while the sum is 46.

The spelling of 61571472265 in words is "sixty-one billion, five hundred seventy-one million, four hundred seventy-two thousand, two hundred sixty-five".