1491167351736 has 96 divisors (see below), whose sum is σ = 4062074955120. Its totient is φ = 494165491200.

The previous prime is 1491167351731. The next prime is 1491167351771. The reversal of 1491167351736 is 6371537611941.

1491167351736 is a `hidden beast` number, since 1 + 4 + 9 + 116 + 7 + 3 + 517 + 3 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491167351731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50562451 + ... + 50591933.

Almost surely, 2^{1491167351736} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1491167351736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2031037477560).

1491167351736 is an abundant number, since it is smaller than the sum of its proper divisors (2570907603384).

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

1491167351736 is a wasteful number, since it uses less digits than its factorization.

1491167351736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33557 (or 33550 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The spelling of 1491167351736 in words is "one trillion, four hundred ninety-one billion, one hundred sixty-seven million, three hundred fifty-one thousand, seven hundred thirty-six".