1641520356436 has 48 divisors (see below), whose sum is σ = 2918441191680. Its totient is φ = 807761664000.

The previous prime is 1641520356367. The next prime is 1641520356449. The reversal of 1641520356436 is 6346530251461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101968740 + ... + 101984836.

It is an arithmetic number, because the mean of its divisors is an integer number (60800858160).

Almost surely, 2^{1641520356436} is an apocalyptic number.

It is an amenable number.

1641520356436 is a deficient number, since it is larger than the sum of its proper divisors (1276920835244).

1641520356436 is a wasteful number, since it uses less digits than its factorization.

1641520356436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17344 (or 17342 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 1641520356436 in words is "one trillion, six hundred forty-one billion, five hundred twenty million, three hundred fifty-six thousand, four hundred thirty-six".