1430659391991 has 48 divisors (see below), whose sum is σ = 2043389956608. Its totient is φ = 890132838400.

The previous prime is 1430659391947. The next prime is 1430659392011. The reversal of 1430659391991 is 1991939560341.

It is not a de Polignac number, because 1430659391991 - 2⁹ = 1430659391479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1430659391921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 176381026 + ... + 176389136.

It is an arithmetic number, because the mean of its divisors is an integer number (42570624096).

Almost surely, 2^{1430659391991} is an apocalyptic number.

1430659391991 is a deficient number, since it is larger than the sum of its proper divisors (612730564617).

1430659391991 is a wasteful number, since it uses less digits than its factorization.

1430659391991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9832 (or 9815 counting only the distinct ones).

The product of its (nonzero) digits is 7085880, while the sum is 60.

The spelling of 1430659391991 in words is "one trillion, four hundred thirty billion, six hundred fifty-nine million, three hundred ninety-one thousand, nine hundred ninety-one".