7477172772 has 12 divisors (see below), whose sum is σ = 17446736496. Its totient is φ = 2492390920.

The previous prime is 7477172737. The next prime is 7477172779. The reversal of 7477172772 is 2772717747.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×7477172772² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7477172779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311548854 + ... + 311548877.

It is an arithmetic number, because the mean of its divisors is an integer number (1453894708).

Almost surely, 2^7477172772 is an apocalyptic number.

It is an amenable number.

7477172772 is an abundant number, since it is smaller than the sum of its proper divisors (9969563724).

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

7477172772 is a wasteful number, since it uses less digits than its factorization.

7477172772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623097738 (or 623097736 counting only the distinct ones).

The product of its digits is 1882384, while the sum is 51.

The square root of 7477172772 is about 86470.6468808925. The cubic root of 7477172772 is about 1955.4459006930.

The spelling of 7477172772 in words is "seven billion, four hundred seventy-seven million, one hundred seventy-two thousand, seven hundred seventy-two".