61273553705 has 32 divisors (see below), whose sum is σ = 90823213824. Its totient is φ = 38644045056.

The previous prime is 61273553683. The next prime is 61273553717. The reversal of 61273553705 is 50735537216.

It is a cyclic number.

It is not a de Polignac number, because 61273553705 - 2⁶ = 61273553641 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117047 + ... + 369116.

It is an arithmetic number, because the mean of its divisors is an integer number (2838225432).

Almost surely, 2^61273553705 is an apocalyptic number.

61273553705 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61273553705 is a deficient number, since it is larger than the sum of its proper divisors (29549660119).

61273553705 is a wasteful number, since it uses less digits than its factorization.

61273553705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486465.

The product of its (nonzero) digits is 661500, while the sum is 44.

The spelling of 61273553705 in words is "sixty-one billion, two hundred seventy-three million, five hundred fifty-three thousand, seven hundred five".