77201403071440 has 80 divisors (see below), whose sum is σ = 182964541305600. Its totient is φ = 30289066841600.

The previous prime is 77201403071413. The next prime is 77201403071461. The reversal of 77201403071440 is 4417030410277.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 77201403071393 and 77201403071402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43783240 + ... + 45512359.

It is an arithmetic number, because the mean of its divisors is an integer number (2287056766320).

Almost surely, 2^{77201403071440} is an apocalyptic number.

It is an amenable number.

77201403071440 is an abundant number, since it is smaller than the sum of its proper divisors (105763138234160).

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

77201403071440 is a wasteful number, since it uses less digits than its factorization.

77201403071440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89295820 (or 89295814 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 40.

The spelling of 77201403071440 in words is "seventy-seven trillion, two hundred one billion, four hundred three million, seventy-one thousand, four hundred forty".