1631473661400 has 144 divisors (see below), whose sum is σ = 5559145624200. Its totient is φ = 395508748800.

The previous prime is 1631473661387. The next prime is 1631473661407. The reversal of 1631473661400 is 41663741361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631473661407) 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, 11163445 + ... + 11308644.

Almost surely, 2^{1631473661400} is an apocalyptic number.

1631473661400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1631473661400 is an abundant number, since it is smaller than the sum of its proper divisors (3927671962800).

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

1631473661400 is a wasteful number, since it uses less digits than its factorization.

1631473661400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22472130 (or 22472110 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 1631473661400 in words is "one trillion, six hundred thirty-one billion, four hundred seventy-three million, six hundred sixty-one thousand, four hundred".