71457503582421 has 24 divisors (see below), whose sum is σ = 113486314466304. Its totient is φ = 42966573370560.

The previous prime is 71457503582341. The next prime is 71457503582461. The reversal of 71457503582421 is 12428530575417.

71457503582421 is a `hidden beast` number, since 7 + 1 + 4 + 5 + 7 + 50 + 3 + 582 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 71457503582421 - 2¹⁰ = 71457503581397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71457503582461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2841692016 + ... + 2841717161.

It is an arithmetic number, because the mean of its divisors is an integer number (4728596436096).

Almost surely, 2^{71457503582421} is an apocalyptic number.

It is an amenable number.

71457503582421 is a deficient number, since it is larger than the sum of its proper divisors (42028810883883).

71457503582421 is a wasteful number, since it uses less digits than its factorization.

71457503582421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5683409321 (or 5683409318 counting only the distinct ones).

The product of its (nonzero) digits is 9408000, while the sum is 54.

The spelling of 71457503582421 in words is "seventy-one trillion, four hundred fifty-seven billion, five hundred three million, five hundred eighty-two thousand, four hundred twenty-one".