764536167121 has 8 divisors (see below), whose sum is σ = 817523824104. Its totient is φ = 712439059200.

The previous prime is 764536167107. The next prime is 764536167151. The reversal of 764536167121 is 121761635467.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 171383580225 + 593152586896 = 413985^2 + 770164^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 764536167121 - 2⁵ = 764536167089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (764536167151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222635490 + ... + 222638923.

It is an arithmetic number, because the mean of its divisors is an integer number (102190478013).

Almost surely, 2^764536167121 is an apocalyptic number.

It is an amenable number.

764536167121 is a deficient number, since it is larger than the sum of its proper divisors (52987656983).

764536167121 is a wasteful number, since it uses less digits than its factorization.

764536167121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445274531.

The product of its digits is 1270080, while the sum is 49.

The spelling of 764536167121 in words is "seven hundred sixty-four billion, five hundred thirty-six million, one hundred sixty-seven thousand, one hundred twenty-one".