61071390361 has 4 divisors (see below), whose sum is σ = 61203866724. Its totient is φ = 60938914000.

The previous prime is 61071390353. The next prime is 61071390371. The reversal of 61071390361 is 16309317016.

61071390361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6522985225 + 54548405136 = 80765^2 + 233556^2 .

It is a cyclic number.

It is not a de Polignac number, because 61071390361 - 2³ = 61071390353 is a prime.

It is a super-3 number, since 3×61071390361³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61071390361.

It is not an unprimeable number, because it can be changed into a prime (61071390311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66237490 + ... + 66238411.

It is an arithmetic number, because the mean of its divisors is an integer number (15300966681).

Almost surely, 2^61071390361 is an apocalyptic number.

It is an amenable number.

61071390361 is a deficient number, since it is larger than the sum of its proper divisors (132476363).

61071390361 is a wasteful number, since it uses less digits than its factorization.

61071390361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132476362.

The product of its (nonzero) digits is 20412, while the sum is 37.

The spelling of 61071390361 in words is "sixty-one billion, seventy-one million, three hundred ninety thousand, three hundred sixty-one".