652040621400 has 384 divisors, whose sum is σ = 2325376166400. Its totient is φ = 148055040000.

The previous prime is 652040621387. The next prime is 652040621459. The reversal of 652040621400 is 4126040256.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 646224096 + ... + 646225104.

It is an arithmetic number, because the mean of its divisors is an integer number (6055667100).

Almost surely, 2^652040621400 is an apocalyptic number.

652040621400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 652040621400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1162688083200).

652040621400 is an abundant number, since it is smaller than the sum of its proper divisors (1673335545000).

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

652040621400 is a wasteful number, since it uses less digits than its factorization.

652040621400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899 (or 1890 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 652040621400 its reverse (4126040256), we get a palindrome (656166661656).

The spelling of 652040621400 in words is "six hundred fifty-two billion, forty million, six hundred twenty-one thousand, four hundred".