61970713847 has 4 divisors (see below), whose sum is σ = 70823672976. Its totient is φ = 53117754720.

The previous prime is 61970713837. The next prime is 61970713867. The reversal of 61970713847 is 74831707916.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61970713847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61970713817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4426479554 + ... + 4426479567.

It is an arithmetic number, because the mean of its divisors is an integer number (17705918244).

Almost surely, 2^61970713847 is an apocalyptic number.

61970713847 is a deficient number, since it is larger than the sum of its proper divisors (8852959129).

61970713847 is an equidigital number, since it uses as much as digits as its factorization.

61970713847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8852959128.

The product of its (nonzero) digits is 1778112, while the sum is 53.

The spelling of 61970713847 in words is "sixty-one billion, nine hundred seventy million, seven hundred thirteen thousand, eight hundred forty-seven".