72251781141801 has 8 divisors (see below), whose sum is σ = 96335950480704. Its totient is φ = 48167732948720.

The previous prime is 72251781141703. The next prime is 72251781141809. The reversal of 72251781141801 is 10814118715227.

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 72251781141801 - 2²⁶ = 72251714032937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72251781141809) 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, 28885590 + ... + 31287071.

It is an arithmetic number, because the mean of its divisors is an integer number (12041993810088).

Almost surely, 2^{72251781141801} is an apocalyptic number.

It is an amenable number.

72251781141801 is a deficient number, since it is larger than the sum of its proper divisors (24084169338903).

72251781141801 is a wasteful number, since it uses less digits than its factorization.

72251781141801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60572911.

The product of its (nonzero) digits is 250880, while the sum is 48.

The spelling of 72251781141801 in words is "seventy-two trillion, two hundred fifty-one billion, seven hundred eighty-one million, one hundred forty-one thousand, eight hundred one".