1421657454951 has 16 divisors (see below), whose sum is σ = 2119080421120. Its totient is φ = 941957083800.

The previous prime is 1421657454929. The next prime is 1421657454967. The reversal of 1421657454951 is 1594547561241.

1421657454951 is a `hidden beast` number, since 1 + 4 + 2 + 16 + 574 + 5 + 4 + 9 + 51 = 666.

It is not a de Polignac number, because 1421657454951 - 2⁷ = 1421657454823 is a prime.

It is a super-2 number, since 2×1421657454951² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421657454991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161510875 + ... + 161519676.

It is an arithmetic number, because the mean of its divisors is an integer number (132442526320).

Almost surely, 2^{1421657454951} is an apocalyptic number.

1421657454951 is a deficient number, since it is larger than the sum of its proper divisors (697422966169).

1421657454951 is a wasteful number, since it uses less digits than its factorization.

1421657454951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323030723 (or 323030717 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 54.

The spelling of 1421657454951 in words is "one trillion, four hundred twenty-one billion, six hundred fifty-seven million, four hundred fifty-four thousand, nine hundred fifty-one".