72261159869 has 8 divisors (see below), whose sum is σ = 72399428640. Its totient is φ = 72122943856.

The previous prime is 72261159847. The next prime is 72261159899. The reversal of 72261159869 is 96895116227.

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 72261159869 - 2¹² = 72261155773 is a prime.

It is a super-2 number, since 2×72261159869² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72261159829) 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, 3701867 + ... + 3721335.

It is an arithmetic number, because the mean of its divisors is an integer number (9049928580).

Almost surely, 2^72261159869 is an apocalyptic number.

It is an amenable number.

72261159869 is a deficient number, since it is larger than the sum of its proper divisors (138268771).

72261159869 is a wasteful number, since it uses less digits than its factorization.

72261159869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26379.

The product of its digits is 3265920, while the sum is 56.

The spelling of 72261159869 in words is "seventy-two billion, two hundred sixty-one million, one hundred fifty-nine thousand, eight hundred sixty-nine".