61415245371115 has 4 divisors (see below), whose sum is σ = 73698294445344. Its totient is φ = 49132196296888.

The previous prime is 61415245371113. The next prime is 61415245371143. The reversal of 61415245371115 is 51117354251416.

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

It is a cyclic number.

It is not a de Polignac number, because 61415245371115 - 2¹ = 61415245371113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61415245371113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6141524537107 + ... + 6141524537116.

It is an arithmetic number, because the mean of its divisors is an integer number (18424573611336).

Almost surely, 2^{61415245371115} is an apocalyptic number.

61415245371115 is a deficient number, since it is larger than the sum of its proper divisors (12283049074229).

61415245371115 is a wasteful number, since it uses less digits than its factorization.

61415245371115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12283049074228.

The product of its digits is 504000, while the sum is 46.

The spelling of 61415245371115 in words is "sixty-one trillion, four hundred fifteen billion, two hundred forty-five million, three hundred seventy-one thousand, one hundred fifteen".