61441605420 has 48 divisors (see below), whose sum is σ = 185270074080. Its totient is φ = 15124087296.

The previous prime is 61441605409. The next prime is 61441605451. The reversal of 61441605420 is 2450614416.

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, 39384865 + ... + 39386424.

It is an arithmetic number, because the mean of its divisors is an integer number (3859793210).

Almost surely, 2^61441605420 is an apocalyptic number.

61441605420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61441605420 is an abundant number, since it is smaller than the sum of its proper divisors (123828468660).

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

61441605420 is a wasteful number, since it uses less digits than its factorization.

61441605420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78771314 (or 78771312 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The spelling of 61441605420 in words is "sixty-one billion, four hundred forty-one million, six hundred five thousand, four hundred twenty".