71345655420 has 144 divisors (see below), whose sum is σ = 228534700128. Its totient is φ = 16528896000.

The previous prime is 71345655419. The next prime is 71345655439. The reversal of 71345655420 is 2455654317.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67170 + ... + 383670.

Almost surely, 2^71345655420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71345655420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114267350064).

71345655420 is an abundant number, since it is smaller than the sum of its proper divisors (157189044708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71345655420 is a wasteful number, since it uses less digits than its factorization.

71345655420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316560 (or 316541 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 42.

The spelling of 71345655420 in words is "seventy-one billion, three hundred forty-five million, six hundred fifty-five thousand, four hundred twenty".