61861845347 has 8 divisors (see below), whose sum is σ = 62971667520. Its totient is φ = 60759115200.

The previous prime is 61861845313. The next prime is 61861845361. The reversal of 61861845347 is 74354816816.

61861845347 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 a de Polignac number, because none of the positive numbers 2^k-61861845347 is a prime.

It is a super-2 number, since 2×61861845347² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61861845047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1755404 + ... + 1790297.

It is an arithmetic number, because the mean of its divisors is an integer number (7871458440).

Almost surely, 2^61861845347 is an apocalyptic number.

61861845347 is a deficient number, since it is larger than the sum of its proper divisors (1109822173).

61861845347 is a wasteful number, since it uses less digits than its factorization.

61861845347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3546013.

The product of its digits is 3870720, while the sum is 53.

The spelling of 61861845347 in words is "sixty-one billion, eight hundred sixty-one million, eight hundred forty-five thousand, three hundred forty-seven".