61457498193 has 24 divisors (see below), whose sum is σ = 102654285888. Its totient is φ = 32417140896.

The previous prime is 61457498189. The next prime is 61457498203. The reversal of 61457498193 is 39189475416.

It is a happy number.

It is not a de Polignac number, because 61457498193 - 2² = 61457498189 is a prime.

It is a super-3 number, since 3×61457498193³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (61457498393) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16078021 + ... + 16081842.

It is an arithmetic number, because the mean of its divisors is an integer number (4277261912).

Almost surely, 2^61457498193 is an apocalyptic number.

It is an amenable number.

61457498193 is a deficient number, since it is larger than the sum of its proper divisors (41196787695).

61457498193 is a wasteful number, since it uses less digits than its factorization.

61457498193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32159893 (or 32159886 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 57.

The spelling of 61457498193 in words is "sixty-one billion, four hundred fifty-seven million, four hundred ninety-eight thousand, one hundred ninety-three".