621941657143 has 8 divisors (see below), whose sum is σ = 625929849216. Its totient is φ = 617964172800.

The previous prime is 621941657119. The next prime is 621941657147. The reversal of 621941657143 is 341756149126.

621941657143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 621941657143 - 2²¹ = 621939559991 is a prime.

It is a super-2 number, since 2×621941657143² (a number of 24 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 (621941657147) 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, 2560378 + ... + 2792743.

It is an arithmetic number, because the mean of its divisors is an integer number (78241231152).

Almost surely, 2^621941657143 is an apocalyptic number.

621941657143 is a deficient number, since it is larger than the sum of its proper divisors (3988192073).

621941657143 is a wasteful number, since it uses less digits than its factorization.

621941657143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5353865.

The product of its digits is 1088640, while the sum is 49.

The spelling of 621941657143 in words is "six hundred twenty-one billion, nine hundred forty-one million, six hundred fifty-seven thousand, one hundred forty-three".