276426415661 has 16 divisors (see below), whose sum is σ = 317612106240. Its totient is φ = 237932115120.

The previous prime is 276426415649. The next prime is 276426415667. The reversal of 276426415661 is 166514624672.

It is a cyclic number.

It is not a de Polignac number, because 276426415661 - 2¹⁸ = 276426153517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276426415667) 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 15 ways as a sum of consecutive naturals, for example, 23705 + ... + 743918.

It is an arithmetic number, because the mean of its divisors is an integer number (19850756640).

Almost surely, 2^276426415661 is an apocalyptic number.

It is an amenable number.

276426415661 is a deficient number, since it is larger than the sum of its proper divisors (41185690579).

276426415661 is a wasteful number, since it uses less digits than its factorization.

276426415661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769376.

The product of its digits is 2903040, while the sum is 50.

The spelling of 276426415661 in words is "two hundred seventy-six billion, four hundred twenty-six million, four hundred fifteen thousand, six hundred sixty-one".