61029272073 has 16 divisors (see below), whose sum is σ = 101451257856. Its totient is φ = 31703517840.

The previous prime is 61029272063. The next prime is 61029272093. The reversal of 61029272073 is 37027292016.

It is not a de Polignac number, because 61029272073 - 2⁸ = 61029271817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61029272063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132097761 + ... + 132098222.

It is an arithmetic number, because the mean of its divisors is an integer number (6340703616).

Almost surely, 2^61029272073 is an apocalyptic number.

It is an amenable number.

61029272073 is a deficient number, since it is larger than the sum of its proper divisors (40421985783).

61029272073 is a wasteful number, since it uses less digits than its factorization.

61029272073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264196004.

The product of its (nonzero) digits is 63504, while the sum is 39.

The spelling of 61029272073 in words is "sixty-one billion, twenty-nine million, two hundred seventy-two thousand, seventy-three".