71072745501 has 8 divisors (see below), whose sum is σ = 94797004320. Its totient is φ = 47365158512.

The previous prime is 71072745493. The next prime is 71072745509. The reversal of 71072745501 is 10554727017.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (71072745493) and next prime (71072745509).

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 71072745501 - 2³ = 71072745493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71072745501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71072745509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4158006 + ... + 4175063.

It is an arithmetic number, because the mean of its divisors is an integer number (11849625540).

Almost surely, 2^71072745501 is an apocalyptic number.

It is an amenable number.

71072745501 is a deficient number, since it is larger than the sum of its proper divisors (23724258819).

71072745501 is a wasteful number, since it uses less digits than its factorization.

71072745501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8335915.

The product of its (nonzero) digits is 68600, while the sum is 39.

The spelling of 71072745501 in words is "seventy-one billion, seventy-two million, seven hundred forty-five thousand, five hundred one".