72049697751 has 8 divisors (see below), whose sum is σ = 96096419584. Its totient is φ = 48018053880.

The previous prime is 72049697749. The next prime is 72049697761. The reversal of 72049697751 is 15779694027.

It is a happy number.

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

It is not a de Polignac number, because 72049697751 - 2¹ = 72049697749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72049697691 and 72049697700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72049697761) 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, 3758335 + ... + 3777456.

It is an arithmetic number, because the mean of its divisors is an integer number (12012052448).

Almost surely, 2^72049697751 is an apocalyptic number.

72049697751 is a deficient number, since it is larger than the sum of its proper divisors (24046721833).

72049697751 is a wasteful number, since it uses less digits than its factorization.

72049697751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7538981.

The product of its (nonzero) digits is 6667920, while the sum is 57.

The spelling of 72049697751 in words is "seventy-two billion, forty-nine million, six hundred ninety-seven thousand, seven hundred fifty-one".