1451326886421 has 4 divisors (see below), whose sum is σ = 1935102515232. Its totient is φ = 967551257612.

The previous prime is 1451326886389. The next prime is 1451326886431. The reversal of 1451326886421 is 1246886231541.

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 1451326886421 - 2⁵ = 1451326886389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451326886431) 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, 241887814401 + ... + 241887814406.

It is an arithmetic number, because the mean of its divisors is an integer number (483775628808).

Almost surely, 2^{1451326886421} is an apocalyptic number.

It is an amenable number.

1451326886421 is a deficient number, since it is larger than the sum of its proper divisors (483775628811).

1451326886421 is an equidigital number, since it uses as much as digits as its factorization.

1451326886421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483775628810.

The product of its digits is 2211840, while the sum is 51.

The spelling of 1451326886421 in words is "one trillion, four hundred fifty-one billion, three hundred twenty-six million, eight hundred eighty-six thousand, four hundred twenty-one".