61544351260 has 48 divisors (see below), whose sum is σ = 148109036544. Its totient is φ = 21043407168.

The previous prime is 61544351227. The next prime is 61544351291. The reversal of 61544351260 is 6215344516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 547534 + ... + 650293.

It is an arithmetic number, because the mean of its divisors is an integer number (3085604928).

Almost surely, 2^61544351260 is an apocalyptic number.

It is an amenable number.

61544351260 is an abundant number, since it is smaller than the sum of its proper divisors (86564685284).

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

61544351260 is a wasteful number, since it uses less digits than its factorization.

61544351260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198210 (or 1198208 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 61544351260 its reverse (6215344516), we get a palindrome (67759695776).

The spelling of 61544351260 in words is "sixty-one billion, five hundred forty-four million, three hundred fifty-one thousand, two hundred sixty".