61139000365 has 8 divisors (see below), whose sum is σ = 74927796480. Its totient is φ = 47870536272.

The previous prime is 61139000309. The next prime is 61139000387. The reversal of 61139000365 is 56300093116.

61139000365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61139000365 - 2¹⁷ = 61138869293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61139000365.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130082745 + ... + 130083214.

It is an arithmetic number, because the mean of its divisors is an integer number (9365974560).

Almost surely, 2^61139000365 is an apocalyptic number.

It is an amenable number.

61139000365 is a deficient number, since it is larger than the sum of its proper divisors (13788796115).

61139000365 is a wasteful number, since it uses less digits than its factorization.

61139000365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260166011.

The product of its (nonzero) digits is 14580, while the sum is 34.

The spelling of 61139000365 in words is "sixty-one billion, one hundred thirty-nine million, three hundred sixty-five", and thus it is an aban number.