1463561166640 has 80 divisors (see below), whose sum is σ = 3432768779808. Its totient is φ = 580286988288.

The previous prime is 1463561166589. The next prime is 1463561166649. The reversal of 1463561166640 is 466611653641.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1463561166640² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1463561166649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4105779 + ... + 4447981.

Almost surely, 2^{1463561166640} is an apocalyptic number.

1463561166640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1463561166640 is an abundant number, since it is smaller than the sum of its proper divisors (1969207613168).

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

1463561166640 is a wasteful number, since it uses less digits than its factorization.

1463561166640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342686 (or 342680 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 1463561166640 in words is "one trillion, four hundred sixty-three billion, five hundred sixty-one million, one hundred sixty-six thousand, six hundred forty".