61411501215361 has 4 divisors (see below), whose sum is σ = 66994364962224. Its totient is φ = 55828637468500.

The previous prime is 61411501215341. The next prime is 61411501215377. The reversal of 61411501215361 is 16351210511416.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61411501215361 - 2¹⁷ = 61411501084289 is a prime.

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 61411501215361.

It is not an unprimeable number, because it can be changed into a prime (61411501215341) 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, 2791431873415 + ... + 2791431873436.

It is an arithmetic number, because the mean of its divisors is an integer number (16748591240556).

Almost surely, 2^{61411501215361} is an apocalyptic number.

It is an amenable number.

61411501215361 is a deficient number, since it is larger than the sum of its proper divisors (5582863746863).

61411501215361 is a wasteful number, since it uses less digits than its factorization.

61411501215361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5582863746862.

The product of its (nonzero) digits is 21600, while the sum is 37.

Adding to 61411501215361 its reverse (16351210511416), we get a palindrome (77762711726777).

The spelling of 61411501215361 in words is "sixty-one trillion, four hundred eleven billion, five hundred one million, two hundred fifteen thousand, three hundred sixty-one".