7601772121 has 4 divisors (see below), whose sum is σ = 7643771044. Its totient is φ = 7559773200.

The previous prime is 7601772119. The next prime is 7601772131. The reversal of 7601772121 is 1212771067.

7601772121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1040772121 + 6561000000 = 32261^2 + 81000^2 .

It is a cyclic number.

It is not a de Polignac number, because 7601772121 - 2¹ = 7601772119 is a prime.

It is a super-2 number, since 2×7601772121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7601772131) 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, 20999190 + ... + 20999551.

It is an arithmetic number, because the mean of its divisors is an integer number (1910942761).

Almost surely, 2^7601772121 is an apocalyptic number.

It is an amenable number.

7601772121 is a deficient number, since it is larger than the sum of its proper divisors (41998923).

7601772121 is a wasteful number, since it uses less digits than its factorization.

7601772121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41998922.

The product of its (nonzero) digits is 8232, while the sum is 34.

The square root of 7601772121 is about 87188.1420893919. The cubic root of 7601772121 is about 1966.2479470763.

The spelling of 7601772121 in words is "seven billion, six hundred one million, seven hundred seventy-two thousand, one hundred twenty-one".