747771488377 has 4 divisors (see below), whose sum is σ = 748031224320. Its totient is φ = 747511752436.

The previous prime is 747771488323. The next prime is 747771488393. The reversal of 747771488377 is 773884177747.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 747771488377 - 2³⁹ = 198015674489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (747771488077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129863653 + ... + 129869410.

It is an arithmetic number, because the mean of its divisors is an integer number (187007806080).

Almost surely, 2^747771488377 is an apocalyptic number.

It is an amenable number.

747771488377 is a deficient number, since it is larger than the sum of its proper divisors (259735943).

747771488377 is a wasteful number, since it uses less digits than its factorization.

747771488377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259735942.

The product of its digits is 361417728, while the sum is 70.

The spelling of 747771488377 in words is "seven hundred forty-seven billion, seven hundred seventy-one million, four hundred eighty-eight thousand, three hundred seventy-seven".