71357292339021 has 32 divisors (see below), whose sum is σ = 113985060752640. Its totient is φ = 43858693512000.

The previous prime is 71357292339019. The next prime is 71357292339059. The reversal of 71357292339021 is 12093329275317.

It is a happy number.

71357292339021 is a `hidden beast` number, since 7 + 13 + 5 + 7 + 292 + 339 + 0 + 2 + 1 = 666.

It is not a de Polignac number, because 71357292339021 - 2¹ = 71357292339019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71357292339821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123522505 + ... + 124098846.

It is an arithmetic number, because the mean of its divisors is an integer number (3562033148520).

Almost surely, 2^{71357292339021} is an apocalyptic number.

It is an amenable number.

71357292339021 is a deficient number, since it is larger than the sum of its proper divisors (42627768413619).

71357292339021 is a wasteful number, since it uses less digits than its factorization.

71357292339021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247622194 (or 247622188 counting only the distinct ones).

The product of its (nonzero) digits is 4286520, while the sum is 54.

The spelling of 71357292339021 in words is "seventy-one trillion, three hundred fifty-seven billion, two hundred ninety-two million, three hundred thirty-nine thousand, twenty-one".