1631451454402 has 32 divisors (see below), whose sum is σ = 3085307314560. Its totient is φ = 628488516480.

The previous prime is 1631451454379. The next prime is 1631451454403. The reversal of 1631451454402 is 2044541541361.

It is not an unprimeable number, because it can be changed into a prime (1631451454403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59502253 + ... + 59529664.

It is an arithmetic number, because the mean of its divisors is an integer number (96415853580).

Almost surely, 2^{1631451454402} is an apocalyptic number.

1631451454402 is a deficient number, since it is larger than the sum of its proper divisors (1453855860158).

1631451454402 is a wasteful number, since it uses less digits than its factorization.

1631451454402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119032026.

The product of its (nonzero) digits is 230400, while the sum is 40.

Adding to 1631451454402 its reverse (2044541541361), we get a palindrome (3675992995763).

The spelling of 1631451454402 in words is "one trillion, six hundred thirty-one billion, four hundred fifty-one million, four hundred fifty-four thousand, four hundred two".