1653069531491 has 32 divisors (see below), whose sum is σ = 1928634679296. Its totient is φ = 1387753920000.

The previous prime is 1653069531461. The next prime is 1653069531523. The reversal of 1653069531491 is 1941359603561.

It is not a de Polignac number, because 1653069531491 - 2¹⁰ = 1653069530467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1653069531461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22777001 + ... + 22849461.

It is an arithmetic number, because the mean of its divisors is an integer number (60269833728).

Almost surely, 2^{1653069531491} is an apocalyptic number.

1653069531491 is a deficient number, since it is larger than the sum of its proper divisors (275565147805).

1653069531491 is a wasteful number, since it uses less digits than its factorization.

1653069531491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72923.

The product of its (nonzero) digits is 2624400, while the sum is 53.

The spelling of 1653069531491 in words is "one trillion, six hundred fifty-three billion, sixty-nine million, five hundred thirty-one thousand, four hundred ninety-one".