1421746641457 has 8 divisors (see below), whose sum is σ = 1496587327200. Its totient is φ = 1346907147264.

The previous prime is 1421746641449. The next prime is 1421746641541. The reversal of 1421746641457 is 7541466471241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1421746641457 - 2³ = 1421746641449 is a prime.

It is a super-2 number, since 2×1421746641457² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421746647457) 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 7 ways as a sum of consecutive naturals, for example, 3211518 + ... + 3627304.

It is an arithmetic number, because the mean of its divisors is an integer number (187073415900).

Almost surely, 2^{1421746641457} is an apocalyptic number.

It is an amenable number.

1421746641457 is a deficient number, since it is larger than the sum of its proper divisors (74840685743).

1421746641457 is a wasteful number, since it uses less digits than its factorization.

1421746641457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595775.

The product of its digits is 4515840, while the sum is 52.

The spelling of 1421746641457 in words is "one trillion, four hundred twenty-one billion, seven hundred forty-six million, six hundred forty-one thousand, four hundred fifty-seven".