61472802169 has 2 divisors, whose sum is σ = 61472802170. Its totient is φ = 61472802168.

The previous prime is 61472802163. The next prime is 61472802257. The reversal of 61472802169 is 96120827416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51238849600 + 10233952569 = 226360^2 + 101163^2 .

It is a cyclic number.

It is not a de Polignac number, because 61472802169 - 2³ = 61472802161 is a prime.

It is a super-2 number, since 2×61472802169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61472802161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30736401084 + 30736401085.

It is an arithmetic number, because the mean of its divisors is an integer number (30736401085).

Almost surely, 2^61472802169 is an apocalyptic number.

It is an amenable number.

61472802169 is a deficient number, since it is larger than the sum of its proper divisors (1).

61472802169 is an equidigital number, since it uses as much as digits as its factorization.

61472802169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 61472802169 in words is "sixty-one billion, four hundred seventy-two million, eight hundred two thousand, one hundred sixty-nine".