61243153761 has 8 divisors (see below), whose sum is σ = 82420693344. Its totient is φ = 40447191680.

The previous prime is 61243153757. The next prime is 61243153789. The reversal of 61243153761 is 16735134216.

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 61243153761 - 2² = 61243153757 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61243154761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95394000 + ... + 95394641.

It is an arithmetic number, because the mean of its divisors is an integer number (10302586668).

Almost surely, 2^61243153761 is an apocalyptic number.

It is an amenable number.

61243153761 is a deficient number, since it is larger than the sum of its proper divisors (21177539583).

61243153761 is a wasteful number, since it uses less digits than its factorization.

61243153761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190788751.

The product of its digits is 90720, while the sum is 39.

Adding to 61243153761 its reverse (16735134216), we get a palindrome (77978287977).

The spelling of 61243153761 in words is "sixty-one billion, two hundred forty-three million, one hundred fifty-three thousand, seven hundred sixty-one".