61021038893 has 8 divisors (see below), whose sum is σ = 61458093312. Its totient is φ = 60585532416.

The previous prime is 61021038887. The next prime is 61021038917. The reversal of 61021038893 is 39883012016.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61021038893 - 2¹² = 61021034797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61021038893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61021038833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307805 + ... + 465602.

It is an arithmetic number, because the mean of its divisors is an integer number (7682261664).

Almost surely, 2^61021038893 is an apocalyptic number.

It is an amenable number.

61021038893 is a deficient number, since it is larger than the sum of its proper divisors (437054419).

61021038893 is a wasteful number, since it uses less digits than its factorization.

61021038893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773971.

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 61021038893 in words is "sixty-one billion, twenty-one million, thirty-eight thousand, eight hundred ninety-three".