61898624017 has 8 divisors (see below), whose sum is σ = 65453778432. Its totient is φ = 58440871200.

The previous prime is 61898624003. The next prime is 61898624033. The reversal of 61898624017 is 71042689816.

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 61898624017 - 2⁷ = 61898623889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61898624617) 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, 24349093 + ... + 24351634.

It is an arithmetic number, because the mean of its divisors is an integer number (8181722304).

Almost surely, 2^61898624017 is an apocalyptic number.

It is an amenable number.

61898624017 is a deficient number, since it is larger than the sum of its proper divisors (3555154415).

61898624017 is a wasteful number, since it uses less digits than its factorization.

61898624017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48700799.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The spelling of 61898624017 in words is "sixty-one billion, eight hundred ninety-eight million, six hundred twenty-four thousand, seventeen".