61488544260 has 144 divisors (see below), whose sum is σ = 203378938560. Its totient is φ = 13759649280.

The previous prime is 61488544223. The next prime is 61488544277. The reversal of 61488544260 is 6244588416.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 164095 + ... + 387174.

It is an arithmetic number, because the mean of its divisors is an integer number (1412353740).

Almost surely, 2^61488544260 is an apocalyptic number.

61488544260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61488544260 is an abundant number, since it is smaller than the sum of its proper divisors (141890394300).

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

61488544260 is a wasteful number, since it uses less digits than its factorization.

61488544260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551318 (or 551303 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 48.

The spelling of 61488544260 in words is "sixty-one billion, four hundred eighty-eight million, five hundred forty-four thousand, two hundred sixty".