77244400399993 has 8 divisors (see below), whose sum is σ = 80532117312768. Its totient is φ = 74024471464944.

The previous prime is 77244400399981. The next prime is 77244400400047. The reversal of 77244400399993 is 39999300444277.

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

It is not a de Polignac number, because 77244400399993 - 2¹³ = 77244400391801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77244400399193) 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, 16946992105 + ... + 16946996662.

It is an arithmetic number, because the mean of its divisors is an integer number (10066514664096).

Almost surely, 2^{77244400399993} is an apocalyptic number.

It is an amenable number.

77244400399993 is a deficient number, since it is larger than the sum of its proper divisors (3287716912775).

77244400399993 is a wasteful number, since it uses less digits than its factorization.

77244400399993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33893988863.

The product of its (nonzero) digits is 370355328, while the sum is 70.

The spelling of 77244400399993 in words is "seventy-seven trillion, two hundred forty-four billion, four hundred million, three hundred ninety-nine thousand, nine hundred ninety-three".