1401512775421 has 8 divisors (see below), whose sum is σ = 1528934349600. Its totient is φ = 1274093088240.

The previous prime is 1401512775401. The next prime is 1401512775427. The reversal of 1401512775421 is 1245772151041.

It is a happy number.

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 1401512775421 - 2⁵ = 1401512775389 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 (1401512775427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1406310 + ... + 2186488.

It is an arithmetic number, because the mean of its divisors is an integer number (191116793700).

Almost surely, 2^{1401512775421} is an apocalyptic number.

1401512775421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1401512775421 is a deficient number, since it is larger than the sum of its proper divisors (127421574179).

1401512775421 is a wasteful number, since it uses less digits than its factorization.

1401512775421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943499.

The product of its (nonzero) digits is 78400, while the sum is 40.

The spelling of 1401512775421 in words is "one trillion, four hundred one billion, five hundred twelve million, seven hundred seventy-five thousand, four hundred twenty-one".