61380535830 has 16 divisors (see below), whose sum is σ = 147313286064. Its totient is φ = 16368142880.

The previous prime is 61380535817. The next prime is 61380535891. The reversal of 61380535830 is 3853508316.

It is a Curzon number.

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, 1023008901 + ... + 1023008960.

It is an arithmetic number, because the mean of its divisors is an integer number (9207080379).

Almost surely, 2^61380535830 is an apocalyptic number.

61380535830 is an abundant number, since it is smaller than the sum of its proper divisors (85932750234).

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

61380535830 is a wasteful number, since it uses less digits than its factorization.

61380535830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046017871.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 61380535830 in words is "sixty-one billion, three hundred eighty million, five hundred thirty-five thousand, eight hundred thirty".