71552345420 has 24 divisors (see below), whose sum is σ = 156792966624. Its totient is φ = 27376549376.

The previous prime is 71552345383. The next prime is 71552345467. The reversal of 71552345420 is 2454325517.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77773829 + ... + 77774748.

It is an arithmetic number, because the mean of its divisors is an integer number (6533040276).

Almost surely, 2^71552345420 is an apocalyptic number.

It is an amenable number.

71552345420 is an abundant number, since it is smaller than the sum of its proper divisors (85240621204).

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

71552345420 is a wasteful number, since it uses less digits than its factorization.

71552345420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155548609 (or 155548607 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 38.

The spelling of 71552345420 in words is "seventy-one billion, five hundred fifty-two million, three hundred forty-five thousand, four hundred twenty".