61068770251801 has 9 divisors (see below), whose sum is σ = 66127831640031. Its totient is φ = 56371078764312.

The previous prime is 61068770251789. The next prime is 61068770251847. The reversal of 61068770251801 is 10815207786016.

The square root of 61068770251801 is 7814651.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 9033841753225 + 52034928498576 = 3005635^2 + 7213524^2 .

It is not a de Polignac number, because 61068770251801 - 2⁷ = 61068770251673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61068770251891) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 101289900 + ... + 101891026.

Almost surely, 2^{61068770251801} is an apocalyptic number.

61068770251801 is the 7814651-st square number.

61068770251801 is the 3907326-th centered octagonal number.

It is an amenable number.

61068770251801 is a deficient number, since it is larger than the sum of its proper divisors (5059061388230).

61068770251801 is an frugal number, since it uses more digits than its factorization.

61068770251801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202280 (or 601140 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 52.

The spelling of 61068770251801 in words is "sixty-one trillion, sixty-eight billion, seven hundred seventy million, two hundred fifty-one thousand, eight hundred one".