1491100257136 has 20 divisors (see below), whose sum is σ = 3301721998192. Its totient is φ = 639042967296.

The previous prime is 1491100257133. The next prime is 1491100257151. The reversal of 1491100257136 is 6317520011941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491100257131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6656697465 + ... + 6656697688.

Almost surely, 2^{1491100257136} is an apocalyptic number.

1491100257136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1491100257136 is an abundant number, since it is smaller than the sum of its proper divisors (1810621741056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1491100257136 is a wasteful number, since it uses less digits than its factorization.

1491100257136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13313395168 (or 13313395162 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 1491100257136 in words is "one trillion, four hundred ninety-one billion, one hundred million, two hundred fifty-seven thousand, one hundred thirty-six".