61026015552 has 336 divisors, whose sum is σ = 175768528320. Its totient is φ = 18671837184.

The previous prime is 61026015541. The next prime is 61026015577. The reversal of 61026015552 is 25551062016.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 388700658 + ... + 388700814.

It is an arithmetic number, because the mean of its divisors is an integer number (523120620).

Almost surely, 2^61026015552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61026015552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87884264160).

61026015552 is an abundant number, since it is smaller than the sum of its proper divisors (114742512768).

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

61026015552 is a wasteful number, since it uses less digits than its factorization.

61026015552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

Adding to 61026015552 its reverse (25551062016), we get a palindrome (86577077568).

The spelling of 61026015552 in words is "sixty-one billion, twenty-six million, fifteen thousand, five hundred fifty-two".