71420689433 has 4 divisors (see below), whose sum is σ = 71848358400. Its totient is φ = 70993020468.

The previous prime is 71420689427. The next prime is 71420689451. The reversal of 71420689433 is 33498602417.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71420689433 - 2³² = 67125722137 is a prime.

It is a super-2 number, since 2×71420689433² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71420689133) 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, 213834233 + ... + 213834566.

It is an arithmetic number, because the mean of its divisors is an integer number (17962089600).

Almost surely, 2^71420689433 is an apocalyptic number.

It is an amenable number.

71420689433 is a deficient number, since it is larger than the sum of its proper divisors (427668967).

71420689433 is a wasteful number, since it uses less digits than its factorization.

71420689433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427668966.

The product of its (nonzero) digits is 870912, while the sum is 47.

The spelling of 71420689433 in words is "seventy-one billion, four hundred twenty million, six hundred eighty-nine thousand, four hundred thirty-three".