1454617591991 has 16 divisors (see below), whose sum is σ = 1464624691200. Its totient is φ = 1444654955808.

The previous prime is 1454617591939. The next prime is 1454617591993. The reversal of 1454617591991 is 1991957164541.

It is a cyclic number.

It is not a de Polignac number, because 1454617591991 - 2³⁴ = 1437437722807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1454617591993) 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, 98417240 + ... + 98432018.

It is an arithmetic number, because the mean of its divisors is an integer number (91539043200).

Almost surely, 2^{1454617591991} is an apocalyptic number.

1454617591991 is a deficient number, since it is larger than the sum of its proper divisors (10007099209).

1454617591991 is a wasteful number, since it uses less digits than its factorization.

1454617591991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16238.

The product of its digits is 12247200, while the sum is 62.

The spelling of 1454617591991 in words is "one trillion, four hundred fifty-four billion, six hundred seventeen million, five hundred ninety-one thousand, nine hundred ninety-one".