71601441551 has 8 divisors (see below), whose sum is σ = 78258881664. Its totient is φ = 65215733760.

The previous prime is 71601441493. The next prime is 71601441617. The reversal of 71601441551 is 15514410617.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71601441551 - 2³⁴ = 54421572367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71601441251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67932530 + ... + 67933583.

It is an arithmetic number, because the mean of its divisors is an integer number (9782360208).

Almost surely, 2^71601441551 is an apocalyptic number.

71601441551 is a deficient number, since it is larger than the sum of its proper divisors (6657440113).

71601441551 is a wasteful number, since it uses less digits than its factorization.

71601441551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135866161.

The product of its (nonzero) digits is 16800, while the sum is 35.

The spelling of 71601441551 in words is "seventy-one billion, six hundred one million, four hundred forty-one thousand, five hundred fifty-one".