77973219712248 has 64 divisors (see below), whose sum is σ = 229967099627520. Its totient is φ = 21559415587200.

The previous prime is 77973219712243. The next prime is 77973219712261. The reversal of 77973219712248 is 84221791237977.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77973219712243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7485902983 + ... + 7485913398.

It is an arithmetic number, because the mean of its divisors is an integer number (3593235931680).

Almost surely, 2^{77973219712248} is an apocalyptic number.

It is an amenable number.

77973219712248 is an abundant number, since it is smaller than the sum of its proper divisors (151993879915272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77973219712248 is a wasteful number, since it uses less digits than its factorization.

77973219712248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14971816428 (or 14971816424 counting only the distinct ones).

The product of its digits is 149361408, while the sum is 69.

The spelling of 77973219712248 in words is "seventy-seven trillion, nine hundred seventy-three billion, two hundred nineteen million, seven hundred twelve thousand, two hundred forty-eight".