61251611258 has 8 divisors (see below), whose sum is σ = 94118329620. Its totient is φ = 29878834720.

The previous prime is 61251611249. The next prime is 61251611279. The reversal of 61251611258 is 85211615216.

61251611258 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 43640463409 + 17611147849 = 208903^2 + 132707^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373485353 + ... + 373485516.

Almost surely, 2^61251611258 is an apocalyptic number.

61251611258 is a deficient number, since it is larger than the sum of its proper divisors (32866718362).

61251611258 is a wasteful number, since it uses less digits than its factorization.

61251611258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746970912.

The product of its digits is 28800, while the sum is 38.

The spelling of 61251611258 in words is "sixty-one billion, two hundred fifty-one million, six hundred eleven thousand, two hundred fifty-eight".