621060223542 has 64 divisors (see below), whose sum is σ = 1435106937600. Its totient is φ = 177085255680.

The previous prime is 621060223541. The next prime is 621060223561. The reversal of 621060223542 is 245322060126.

It is a happy number.

It is a super-2 number, since 2×621060223542² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621060223541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4565709 + ... + 4699767.

It is an arithmetic number, because the mean of its divisors is an integer number (22423545900).

Almost surely, 2^621060223542 is an apocalyptic number.

621060223542 is an abundant number, since it is smaller than the sum of its proper divisors (814046714058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

621060223542 is a wasteful number, since it uses less digits than its factorization.

621060223542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138221.

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

Adding to 621060223542 its reverse (245322060126), we get a palindrome (866382283668).

The spelling of 621060223542 in words is "six hundred twenty-one billion, sixty million, two hundred twenty-three thousand, five hundred forty-two".