1451335440021 has 8 divisors (see below), whose sum is σ = 1936363192800. Its totient is φ = 966932323632.

The previous prime is 1451335440001. The next prime is 1451335440077. The reversal of 1451335440021 is 1200445331541.

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

It is not a de Polignac number, because 1451335440021 - 2⁹ = 1451335439509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451335440001) 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, 156153675 + ... + 156162968.

It is an arithmetic number, because the mean of its divisors is an integer number (242045399100).

Almost surely, 2^{1451335440021} is an apocalyptic number.

It is an amenable number.

1451335440021 is a deficient number, since it is larger than the sum of its proper divisors (485027752779).

1451335440021 is a wasteful number, since it uses less digits than its factorization.

1451335440021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312318195.

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 1451335440021 in words is "one trillion, four hundred fifty-one billion, three hundred thirty-five million, four hundred forty thousand, twenty-one".