61043911530 has 64 divisors (see below), whose sum is σ = 174714513408. Its totient is φ = 13346245440.

The previous prime is 61043911499. The next prime is 61043911541. The reversal of 61043911530 is 3511934016.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61043911491 and 61043911500.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6314416 + ... + 6324075.

It is an arithmetic number, because the mean of its divisors is an integer number (2729914272).

Almost surely, 2^61043911530 is an apocalyptic number.

61043911530 is an abundant number, since it is smaller than the sum of its proper divisors (113670601878).

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

61043911530 is a wasteful number, since it uses less digits than its factorization.

61043911530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12638531.

The product of its (nonzero) digits is 9720, while the sum is 33.

The spelling of 61043911530 in words is "sixty-one billion, forty-three million, nine hundred eleven thousand, five hundred thirty".