8276121545 has 4 divisors (see below), whose sum is σ = 9931345860. Its totient is φ = 6620897232.

The previous prime is 8276121541. The next prime is 8276121547. The reversal of 8276121545 is 5451216728.

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 2569678864 + 5706442681 = 50692^2 + 75541^2 .

It is a cyclic number.

It is not a de Polignac number, because 8276121545 - 2² = 8276121541 is a prime.

It is a super-2 number, since 2×8276121545² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8276121541) 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, 827612150 + ... + 827612159.

It is an arithmetic number, because the mean of its divisors is an integer number (2482836465).

Almost surely, 2^8276121545 is an apocalyptic number.

It is an amenable number.

8276121545 is a deficient number, since it is larger than the sum of its proper divisors (1655224315).

8276121545 is a wasteful number, since it uses less digits than its factorization.

8276121545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655224314.

The product of its digits is 134400, while the sum is 41.

The square root of 8276121545 is about 90973.1913532773. The cubic root of 8276121545 is about 2022.7503580947.

The spelling of 8276121545 in words is "eight billion, two hundred seventy-six million, one hundred twenty-one thousand, five hundred forty-five".