276902213263641 has 45 divisors (see below), whose sum is σ = 481179590661231. Its totient is φ = 158229237097008.

The previous prime is 276902213263639. The next prime is 276902213263721. The reversal of 276902213263641 is 146362312209672.

The square root of 276902213263641 is 16640379.

It is a perfect power (a square), and thus also a powerful number.

276902213263641 is a `hidden beast` number, since 2 + 7 + 6 + 90 + 221 + 326 + 3 + 6 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 213397316015625 + 63504897248016 = 14608125^2 + 7968996^2 .

It is not a de Polignac number, because 276902213263641 - 2¹ = 276902213263639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (276902213263631) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1048211811 + ... + 1048475943.

Almost surely, 2^{276902213263641} is an apocalyptic number.

276902213263641 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

276902213263641 is the 16640379-th square number.

276902213263641 is the 8320190-th centered octagonal number.

It is an amenable number.

276902213263641 is a deficient number, since it is larger than the sum of its proper divisors (204277377397590).

276902213263641 is an frugal number, since it uses more digits than its factorization.

276902213263641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528292 (or 264143 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 54.

The spelling of 276902213263641 in words is "two hundred seventy-six trillion, nine hundred two billion, two hundred thirteen million, two hundred sixty-three thousand, six hundred forty-one".