61436840098 has 4 divisors (see below), whose sum is σ = 92155260150. Its totient is φ = 30718420048.

The previous prime is 61436840063. The next prime is 61436840111. The reversal of 61436840098 is 89004863416.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 57512193489 + 3924646609 = 239817^2 + 62647^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15359210023 + ... + 15359210026.

Almost surely, 2^61436840098 is an apocalyptic number.

61436840098 is a deficient number, since it is larger than the sum of its proper divisors (30718420052).

61436840098 is a wasteful number, since it uses less digits than its factorization.

61436840098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30718420051.

The product of its (nonzero) digits is 995328, while the sum is 49.

The spelling of 61436840098 in words is "sixty-one billion, four hundred thirty-six million, eight hundred forty thousand, ninety-eight".