621432250143 has 16 divisors (see below), whose sum is σ = 846523892736. Its totient is φ = 405321018080.

The previous prime is 621432250139. The next prime is 621432250183. The reversal of 621432250143 is 341052234126.

It is a cyclic number.

It is not a de Polignac number, because 621432250143 - 2² = 621432250139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621432250183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452028 + ... + 1202993.

It is an arithmetic number, because the mean of its divisors is an integer number (52907743296).

Almost surely, 2^621432250143 is an apocalyptic number.

621432250143 is a deficient number, since it is larger than the sum of its proper divisors (225091642593).

621432250143 is a wasteful number, since it uses less digits than its factorization.

621432250143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657734.

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 621432250143 its reverse (341052234126), we get a palindrome (962484484269).

The spelling of 621432250143 in words is "six hundred twenty-one billion, four hundred thirty-two million, two hundred fifty thousand, one hundred forty-three".