71054652421 has 4 divisors (see below), whose sum is σ = 71056825632. Its totient is φ = 71052479212.

The previous prime is 71054652413. The next prime is 71054652451. The reversal of 71054652421 is 12425645017.

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 71054652421 - 2³ = 71054652413 is a prime.

It is a super-2 number, since 2×71054652421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71054652451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1036801 + ... + 1103206.

It is an arithmetic number, because the mean of its divisors is an integer number (17764206408).

Almost surely, 2^71054652421 is an apocalyptic number.

It is an amenable number.

71054652421 is a deficient number, since it is larger than the sum of its proper divisors (2173211).

71054652421 is a wasteful number, since it uses less digits than its factorization.

71054652421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173210.

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 71054652421 in words is "seventy-one billion, fifty-four million, six hundred fifty-two thousand, four hundred twenty-one".