61026615321 has 24 divisors (see below), whose sum is σ = 94665227904. Its totient is φ = 34868040480.

The previous prime is 61026615257. The next prime is 61026615343. The reversal of 61026615321 is 12351662016.

It is not a de Polignac number, because 61026615321 - 2⁶ = 61026615257 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61026615361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1458336 + ... + 1499598.

It is an arithmetic number, because the mean of its divisors is an integer number (3944384496).

Almost surely, 2^61026615321 is an apocalyptic number.

It is an amenable number.

61026615321 is a deficient number, since it is larger than the sum of its proper divisors (33638612583).

61026615321 is a wasteful number, since it uses less digits than its factorization.

61026615321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51341 (or 51334 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 61026615321 in words is "sixty-one billion, twenty-six million, six hundred fifteen thousand, three hundred twenty-one".