1520631464064 has 32 divisors (see below), whose sum is σ = 4039177327440. Its totient is φ = 506877154560.

The previous prime is 1520631463991. The next prime is 1520631464071. The reversal of 1520631464064 is 4604641360251.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1979988502 + ... + 1979989269.

Almost surely, 2^{1520631464064} is an apocalyptic number.

It is an amenable number.

1520631464064 is an abundant number, since it is smaller than the sum of its proper divisors (2518545863376).

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

1520631464064 is an equidigital number, since it uses as much as digits as its factorization.

1520631464064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3959977788 (or 3959977776 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 1520631464064 in words is "one trillion, five hundred twenty billion, six hundred thirty-one million, four hundred sixty-four thousand, sixty-four".