1521974271064 has 48 divisors (see below), whose sum is σ = 3182844712320. Its totient is φ = 678227222400.

The previous prime is 1521974271011. The next prime is 1521974271073. The reversal of 1521974271064 is 4601724791251.

It is a junction number, because it is equal to n+sod(n) for n = 1521974270999 and 1521974271017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8613112 + ... + 8788039.

It is an arithmetic number, because the mean of its divisors is an integer number (66309264840).

Almost surely, 2^{1521974271064} is an apocalyptic number.

It is an amenable number.

1521974271064 is an abundant number, since it is smaller than the sum of its proper divisors (1660870441256).

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

1521974271064 is a wasteful number, since it uses less digits than its factorization.

1521974271064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17401228 (or 17401195 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 1521974271064 in words is "one trillion, five hundred twenty-one billion, nine hundred seventy-four million, two hundred seventy-one thousand, sixty-four".