402007276655 has 8 divisors (see below), whose sum is σ = 482447316672. Its totient is φ = 321580098208.

The previous prime is 402007276651. The next prime is 402007276787. The reversal of 402007276655 is 556672700204.

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 402007276655 - 2² = 402007276651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402007276651) 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, 3146492 + ... + 3271761.

It is an arithmetic number, because the mean of its divisors is an integer number (60305914584).

Almost surely, 2^402007276655 is an apocalyptic number.

402007276655 is a deficient number, since it is larger than the sum of its proper divisors (80440040017).

402007276655 is a wasteful number, since it uses less digits than its factorization.

402007276655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6430785.

The product of its (nonzero) digits is 705600, while the sum is 44.

Adding to 402007276655 its reverse (556672700204), we get a palindrome (958679976859).

The spelling of 402007276655 in words is "four hundred two billion, seven million, two hundred seventy-six thousand, six hundred fifty-five".