61219643530 has 16 divisors (see below), whose sum is σ = 110614356864. Its totient is φ = 24394746640.

The previous prime is 61219643501. The next prime is 61219643567. The reversal of 61219643530 is 3534691216.

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, 11636086 + ... + 11641345.

It is an arithmetic number, because the mean of its divisors is an integer number (6913397304).

Almost surely, 2^61219643530 is an apocalyptic number.

61219643530 is a deficient number, since it is larger than the sum of its proper divisors (49394713334).

61219643530 is a wasteful number, since it uses less digits than its factorization.

61219643530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23277701.

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 61219643530 in words is "sixty-one billion, two hundred nineteen million, six hundred forty-three thousand, five hundred thirty".