621607021141623 has 8 divisors (see below), whose sum is σ = 904155667115136. Its totient is φ = 376731527964600.

The previous prime is 621607021141591. The next prime is 621607021141663. The reversal of 621607021141623 is 326141120706126.

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

It is not a de Polignac number, because 621607021141623 - 2⁵ = 621607021141591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621607021141663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9418288199083 + ... + 9418288199148.

It is an arithmetic number, because the mean of its divisors is an integer number (113019458389392).

Almost surely, 2^{621607021141623} is an apocalyptic number.

621607021141623 is a deficient number, since it is larger than the sum of its proper divisors (282548645973513).

621607021141623 is a wasteful number, since it uses less digits than its factorization.

621607021141623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18836576398245.

The product of its (nonzero) digits is 145152, while the sum is 42.

Adding to 621607021141623 its reverse (326141120706126), we get a palindrome (947748141847749).

The spelling of 621607021141623 in words is "six hundred twenty-one trillion, six hundred seven billion, twenty-one million, one hundred forty-one thousand, six hundred twenty-three".