1621370508047 has 8 divisors (see below), whose sum is σ = 1638146199312. Its totient is φ = 1604608984000.

The previous prime is 1621370508013. The next prime is 1621370508049. The reversal of 1621370508047 is 7408050731261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1621370508047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1621370507989 and 1621370508007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621370508049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3311654 + ... + 3769587.

It is an arithmetic number, because the mean of its divisors is an integer number (204768274914).

Almost surely, 2^{1621370508047} is an apocalyptic number.

1621370508047 is a deficient number, since it is larger than the sum of its proper divisors (16775691265).

1621370508047 is a wasteful number, since it uses less digits than its factorization.

1621370508047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7083609.

The product of its (nonzero) digits is 282240, while the sum is 44.

The spelling of 1621370508047 in words is "one trillion, six hundred twenty-one billion, three hundred seventy million, five hundred eight thousand, forty-seven".