61573004293 has 16 divisors (see below), whose sum is σ = 66548370096. Its totient is φ = 56756183040.

The previous prime is 61573004279. The next prime is 61573004309. The reversal of 61573004293 is 39240037516.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1309137124 + 60263867169 = 36182^2 + 245487^2 .

It is a cyclic number.

It is not a de Polignac number, because 61573004293 - 2⁵ = 61573004261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61573004263) 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, 114205 + ... + 369037.

It is an arithmetic number, because the mean of its divisors is an integer number (4159273131).

Almost surely, 2^61573004293 is an apocalyptic number.

It is an amenable number.

61573004293 is a deficient number, since it is larger than the sum of its proper divisors (4975365803).

61573004293 is a wasteful number, since it uses less digits than its factorization.

61573004293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255144.

The product of its (nonzero) digits is 136080, while the sum is 40.

The spelling of 61573004293 in words is "sixty-one billion, five hundred seventy-three million, four thousand, two hundred ninety-three".