1630123544640 has 56 divisors (see below), whose sum is σ = 5175642257280. Its totient is φ = 434699611648.

The previous prime is 1630123544611. The next prime is 1630123544657. The reversal of 1630123544640 is 464453210361.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 849021720 + ... + 849023639.

Almost surely, 2^{1630123544640} is an apocalyptic number.

1630123544640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1630123544640 is an abundant number, since it is smaller than the sum of its proper divisors (3545518712640).

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

1630123544640 is a wasteful number, since it uses less digits than its factorization.

1630123544640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698045379 (or 1698045369 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 1630123544640 in words is "one trillion, six hundred thirty billion, one hundred twenty-three million, five hundred forty-four thousand, six hundred forty".