6402127661401 has 4 divisors (see below), whose sum is σ = 6402277949904. Its totient is φ = 6401977372900.

The previous prime is 6402127661393. The next prime is 6402127661407. The reversal of 6402127661401 is 1041667212046.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6402127661401 - 2³ = 6402127661393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6402127661407) 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, 75080335 + ... + 75165556.

It is an arithmetic number, because the mean of its divisors is an integer number (1600569487476).

Almost surely, 2^{6402127661401} is an apocalyptic number.

It is an amenable number.

6402127661401 is a deficient number, since it is larger than the sum of its proper divisors (150288503).

6402127661401 is a wasteful number, since it uses less digits than its factorization.

6402127661401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150288502.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 6402127661401 in words is "six trillion, four hundred two billion, one hundred twenty-seven million, six hundred sixty-one thousand, four hundred one".