1621046522012 has 12 divisors (see below), whose sum is σ = 2872740672480. Its totient is φ = 800263472736.

The previous prime is 1621046521979. The next prime is 1621046522033. The reversal of 1621046522012 is 2102256401261.

It is a self number, because there is not a number n which added to its sum of digits gives 1621046522012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2564946713 + ... + 2564947344.

It is an arithmetic number, because the mean of its divisors is an integer number (239395056040).

Almost surely, 2^{1621046522012} is an apocalyptic number.

It is an amenable number.

1621046522012 is a deficient number, since it is larger than the sum of its proper divisors (1251694150468).

1621046522012 is a wasteful number, since it uses less digits than its factorization.

1621046522012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5129894140 (or 5129894138 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 1621046522012 in words is "one trillion, six hundred twenty-one billion, forty-six million, five hundred twenty-two thousand, twelve".