1621054122269 has 8 divisors (see below), whose sum is σ = 1643362835712. Its totient is φ = 1598748179040.

The previous prime is 1621054122257. The next prime is 1621054122287. The reversal of 1621054122269 is 9622214501261.

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

It is a cyclic number.

It is not a de Polignac number, because 1621054122269 - 2⁸ = 1621054122013 is a prime.

It is a super-2 number, since 2×1621054122269² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621054122869) 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, 499874 + ... + 1868684.

It is an arithmetic number, because the mean of its divisors is an integer number (205420354464).

Almost surely, 2^{1621054122269} is an apocalyptic number.

It is an amenable number.

1621054122269 is a deficient number, since it is larger than the sum of its proper divisors (22308713443).

1621054122269 is a wasteful number, since it uses less digits than its factorization.

1621054122269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385107.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 1621054122269 in words is "one trillion, six hundred twenty-one billion, fifty-four million, one hundred twenty-two thousand, two hundred sixty-nine".