1622473988421 has 64 divisors (see below), whose sum is σ = 2571872808960. Its totient is φ = 896873360640.

The previous prime is 1622473988413. The next prime is 1622473988437. The reversal of 1622473988421 is 1248893742261.

It is not a de Polignac number, because 1622473988421 - 2³ = 1622473988413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622473988441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17810836 + ... + 17901698.

It is an arithmetic number, because the mean of its divisors is an integer number (40185512640).

Almost surely, 2^{1622473988421} is an apocalyptic number.

1622473988421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1622473988421 is a deficient number, since it is larger than the sum of its proper divisors (949398820539).

1622473988421 is a wasteful number, since it uses less digits than its factorization.

1622473988421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91386.

The product of its digits is 9289728, while the sum is 57.

The spelling of 1622473988421 in words is "one trillion, six hundred twenty-two billion, four hundred seventy-three million, nine hundred eighty-eight thousand, four hundred twenty-one".