61512121097 has 8 divisors (see below), whose sum is σ = 70591268352. Its totient is φ = 52505899200.

The previous prime is 61512121093. The next prime is 61512121103. The reversal of 61512121097 is 79012121516.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61512121097 - 2² = 61512121093 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61512121091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18229529 + ... + 18232902.

It is an arithmetic number, because the mean of its divisors is an integer number (8823908544).

Almost surely, 2^61512121097 is an apocalyptic number.

It is an amenable number.

61512121097 is a deficient number, since it is larger than the sum of its proper divisors (9079147255).

61512121097 is a wasteful number, since it uses less digits than its factorization.

61512121097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36462679.

The product of its (nonzero) digits is 7560, while the sum is 35.

The spelling of 61512121097 in words is "sixty-one billion, five hundred twelve million, one hundred twenty-one thousand, ninety-seven".