77072873472 has 144 divisors (see below), whose sum is σ = 254401121520. Its totient is φ = 22020784128.

The previous prime is 77072873467. The next prime is 77072873473. The reversal of 77072873472 is 27437827077.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77072873473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169653 + ... + 427700.

It is an arithmetic number, because the mean of its divisors is an integer number (1766674455).

Almost surely, 2^77072873472 is an apocalyptic number.

77072873472 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

77072873472 is an abundant number, since it is smaller than the sum of its proper divisors (177328248048).

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

77072873472 is a wasteful number, since it uses less digits than its factorization.

77072873472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597388 (or 597365 counting only the distinct ones).

The product of its (nonzero) digits is 6453888, while the sum is 54.

The spelling of 77072873472 in words is "seventy-seven billion, seventy-two million, eight hundred seventy-three thousand, four hundred seventy-two".