1641520356434 has 16 divisors (see below), whose sum is σ = 2838937863168. Its totient is φ = 697282982592.

The previous prime is 1641520356367. The next prime is 1641520356449. The reversal of 1641520356434 is 4346530251461.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 518810162 + ... + 518813325.

It is an arithmetic number, because the mean of its divisors is an integer number (177433616448).

Almost surely, 2^{1641520356434} is an apocalyptic number.

1641520356434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1641520356434 is a deficient number, since it is larger than the sum of its proper divisors (1197417506734).

1641520356434 is a wasteful number, since it uses less digits than its factorization.

1641520356434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037623609.

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 1641520356434 in words is "one trillion, six hundred forty-one billion, five hundred twenty million, three hundred fifty-six thousand, four hundred thirty-four".