73254051561 has 16 divisors (see below), whose sum is σ = 98090854848. Its totient is φ = 48626760000.

The previous prime is 73254051553. The next prime is 73254051589. The reversal of 73254051561 is 16515045237.

It is not a de Polignac number, because 73254051561 - 2³ = 73254051553 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (73254051511) 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, 2846331 + ... + 2871951.

It is an arithmetic number, because the mean of its divisors is an integer number (6130678428).

Almost surely, 2^73254051561 is an apocalyptic number.

It is an amenable number.

73254051561 is a deficient number, since it is larger than the sum of its proper divisors (24836803287).

73254051561 is a wasteful number, since it uses less digits than its factorization.

73254051561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29672.

The product of its (nonzero) digits is 126000, while the sum is 39.

Adding to 73254051561 its reverse (16515045237), we get a palindrome (89769096798).

The spelling of 73254051561 in words is "seventy-three billion, two hundred fifty-four million, fifty-one thousand, five hundred sixty-one".