7964145533 has 6 divisors (see below), whose sum is σ = 8460182586. Its totient is φ = 7495666112.

The previous prime is 7964145517. The next prime is 7964145571. The reversal of 7964145533 is 3355414697.

7964145533 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2817804889 + 5146340644 = 53083^2 + 71738^2 .

It is not a de Polignac number, because 7964145533 - 2⁴ = 7964145517 is a prime.

It is a super-2 number, since 2×7964145533² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7964105533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13778510 + ... + 13779087.

It is an arithmetic number, because the mean of its divisors is an integer number (1410030431).

Almost surely, 2^7964145533 is an apocalyptic number.

It is an amenable number.

7964145533 is a deficient number, since it is larger than the sum of its proper divisors (496037053).

7964145533 is a wasteful number, since it uses less digits than its factorization.

7964145533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27557631 (or 27557614 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 47.

The square root of 7964145533 is about 89242.0614564679. The cubic root of 7964145533 is about 1997.0076529123.

The spelling of 7964145533 in words is "seven billion, nine hundred sixty-four million, one hundred forty-five thousand, five hundred thirty-three".