1451442636431 has 16 divisors (see below), whose sum is σ = 1525475370144. Its totient is φ = 1379247657984.

The previous prime is 1451442636379. The next prime is 1451442636503. The reversal of 1451442636431 is 1346362441541.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1451442636431 is a prime.

It is a super-2 number, since 2×1451442636431² (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 (1451442638431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20929991 + ... + 20999223.

It is an arithmetic number, because the mean of its divisors is an integer number (95342210634).

Almost surely, 2^{1451442636431} is an apocalyptic number.

1451442636431 is a deficient number, since it is larger than the sum of its proper divisors (74032733713).

1451442636431 is a wasteful number, since it uses less digits than its factorization.

1451442636431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82490.

The product of its digits is 829440, while the sum is 44.

The spelling of 1451442636431 in words is "one trillion, four hundred fifty-one billion, four hundred forty-two million, six hundred thirty-six thousand, four hundred thirty-one".