1621031223357 has 48 divisors (see below), whose sum is σ = 2924845822080. Its totient is φ = 842287476096.

The previous prime is 1621031223341. The next prime is 1621031223377. The reversal of 1621031223357 is 7533221301261.

1621031223357 is a `hidden beast` number, since 1 + 6 + 2 + 1 + 0 + 312 + 2 + 335 + 7 = 666.

It is not a de Polignac number, because 1621031223357 - 2⁴ = 1621031223341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621031223377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14715882 + ... + 14825627.

It is an arithmetic number, because the mean of its divisors is an integer number (60934287960).

Almost surely, 2^{1621031223357} is an apocalyptic number.

It is an amenable number.

1621031223357 is a deficient number, since it is larger than the sum of its proper divisors (1303814598723).

1621031223357 is a wasteful number, since it uses less digits than its factorization.

1621031223357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29541602 (or 29541599 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 1621031223357 in words is "one trillion, six hundred twenty-one billion, thirty-one million, two hundred twenty-three thousand, three hundred fifty-seven".