71420834107958 has 4 divisors (see below), whose sum is σ = 107131251161940. Its totient is φ = 35710417053978.

The previous prime is 71420834107949. The next prime is 71420834108161. The reversal of 71420834107958 is 85970143802417.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 71420834107897 and 71420834107906.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 17855208526988 + ... + 17855208526991.

It is an arithmetic number, because the mean of its divisors is an integer number (26782812790485).

Almost surely, 2^{71420834107958} is an apocalyptic number.

71420834107958 is a deficient number, since it is larger than the sum of its proper divisors (35710417053982).

71420834107958 is a wasteful number, since it uses less digits than its factorization.

71420834107958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35710417053981.

The product of its (nonzero) digits is 13547520, while the sum is 59.

The spelling of 71420834107958 in words is "seventy-one trillion, four hundred twenty billion, eight hundred thirty-four million, one hundred seven thousand, nine hundred fifty-eight".