61071871513 has 8 divisors (see below), whose sum is σ = 64293129920. Its totient is φ = 57851308080.

The previous prime is 61071871499. The next prime is 61071871519. The reversal of 61071871513 is 31517817016.

It is a happy number.

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 61071871513 - 2⁹ = 61071871001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61071871519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11731 + ... + 349687.

It is an arithmetic number, because the mean of its divisors is an integer number (8036641240).

Almost surely, 2^61071871513 is an apocalyptic number.

It is an amenable number.

61071871513 is a deficient number, since it is larger than the sum of its proper divisors (3221258407).

61071871513 is a wasteful number, since it uses less digits than its factorization.

61071871513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347487.

The product of its (nonzero) digits is 35280, while the sum is 40.

The spelling of 61071871513 in words is "sixty-one billion, seventy-one million, eight hundred seventy-one thousand, five hundred thirteen".