1518420063631 has 8 divisors (see below), whose sum is σ = 1570906291680. Its totient is φ = 1465942296672.

The previous prime is 1518420063593. The next prime is 1518420063647. The reversal of 1518420063631 is 1363600248151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1518420063631 - 2⁹ = 1518420063119 is a prime.

It is a super-2 number, since 2×1518420063631² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1518420063731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1749075 + ... + 2469028.

It is an arithmetic number, because the mean of its divisors is an integer number (196363286460).

Almost surely, 2^{1518420063631} is an apocalyptic number.

1518420063631 is a deficient number, since it is larger than the sum of its proper divisors (52486228049).

1518420063631 is a wasteful number, since it uses less digits than its factorization.

1518420063631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4230545.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 1518420063631 in words is "one trillion, five hundred eighteen billion, four hundred twenty million, sixty-three thousand, six hundred thirty-one".