61481005620 has 24 divisors (see below), whose sum is σ = 172146815904. Its totient is φ = 16394934816.

The previous prime is 61481005609. The next prime is 61481005639. The reversal of 61481005620 is 2650018416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512341654 + ... + 512341773.

It is an arithmetic number, because the mean of its divisors is an integer number (7172783996).

Almost surely, 2^61481005620 is an apocalyptic number.

61481005620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61481005620 is an abundant number, since it is smaller than the sum of its proper divisors (110665810284).

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

61481005620 is a wasteful number, since it uses less digits than its factorization.

61481005620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024683439 (or 1024683437 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 61481005620 in words is "sixty-one billion, four hundred eighty-one million, five thousand, six hundred twenty".