61855026928 has 40 divisors (see below), whose sum is σ = 121799012400. Its totient is φ = 30425209344.

The previous prime is 61855026917. The next prime is 61855026929. The reversal of 61855026928 is 82962055816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61855026929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386283 + ... + 522421.

It is an arithmetic number, because the mean of its divisors is an integer number (3044975310).

Almost surely, 2^61855026928 is an apocalyptic number.

It is an amenable number.

61855026928 is a deficient number, since it is larger than the sum of its proper divisors (59943985472).

61855026928 is a wasteful number, since it uses less digits than its factorization.

61855026928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136609 (or 136603 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 52.

The spelling of 61855026928 in words is "sixty-one billion, eight hundred fifty-five million, twenty-six thousand, nine hundred twenty-eight".