72710041661 has 8 divisors (see below), whose sum is σ = 74434308480. Its totient is φ = 70993160128.

The previous prime is 72710041637. The next prime is 72710041721. The reversal of 72710041661 is 16614001727.

It is a happy number.

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 72710041661 - 2³⁰ = 71636299837 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 (72710041601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1826396 + ... + 1865781.

It is an arithmetic number, because the mean of its divisors is an integer number (9304288560).

Almost surely, 2^72710041661 is an apocalyptic number.

It is an amenable number.

72710041661 is a deficient number, since it is larger than the sum of its proper divisors (1724266819).

72710041661 is a wasteful number, since it uses less digits than its factorization.

72710041661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3692643.

The product of its (nonzero) digits is 14112, while the sum is 35.

The spelling of 72710041661 in words is "seventy-two billion, seven hundred ten million, forty-one thousand, six hundred sixty-one".