1494723593664 has 252 divisors, whose sum is σ = 4989066042168. Its totient is φ = 426616243200.

The previous prime is 1494723593663. The next prime is 1494723593677. The reversal of 1494723593664 is 4663953274941.

It is a happy number.

1494723593664 is a `hidden beast` number, since 1 + 49 + 472 + 35 + 9 + 36 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (252).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1494723593663) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 27378234 + ... + 27432774.

Almost surely, 2^{1494723593664} is an apocalyptic number.

1494723593664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1494723593664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2494533021084).

1494723593664 is an abundant number, since it is smaller than the sum of its proper divisors (3494342448504).

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

1494723593664 is a wasteful number, since it uses less digits than its factorization.

1494723593664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55544 (or 55524 counting only the distinct ones).

The product of its digits is 117573120, while the sum is 63.

The spelling of 1494723593664 in words is "one trillion, four hundred ninety-four billion, seven hundred twenty-three million, five hundred ninety-three thousand, six hundred sixty-four".