61144295908 has 6 divisors (see below), whose sum is σ = 107002517846. Its totient is φ = 30572147952.

The previous prime is 61144295897. The next prime is 61144295917. The reversal of 61144295908 is 80959244116.

It can be written as a sum of positive squares in only one way, i.e., 46534255524 + 14610040384 = 215718^2 + 120872^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7643036985 + ... + 7643036992.

Almost surely, 2^61144295908 is an apocalyptic number.

It is an amenable number.

61144295908 is a deficient number, since it is larger than the sum of its proper divisors (45858221938).

61144295908 is a wasteful number, since it uses less digits than its factorization.

61144295908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15286073981 (or 15286073979 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 61144295908 in words is "sixty-one billion, one hundred forty-four million, two hundred ninety-five thousand, nine hundred eight".