61434756347 has 4 divisors (see below), whose sum is σ = 61435401456. Its totient is φ = 61434111240.

The previous prime is 61434756337. The next prime is 61434756359. The reversal of 61434756347 is 74365743416.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 61434756347 - 2⁸ = 61434756091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61434756295 and 61434756304.

It is not an unprimeable number, because it can be changed into a prime (61434756337) 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, 148343 + ... + 380624.

It is an arithmetic number, because the mean of its divisors is an integer number (15358850364).

Almost surely, 2^61434756347 is an apocalyptic number.

61434756347 is a deficient number, since it is larger than the sum of its proper divisors (645109).

61434756347 is a wasteful number, since it uses less digits than its factorization.

61434756347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645108.

The product of its digits is 5080320, while the sum is 50.

The spelling of 61434756347 in words is "sixty-one billion, four hundred thirty-four million, seven hundred fifty-six thousand, three hundred forty-seven".