61498330650 has 96 divisors (see below), whose sum is σ = 171554496000. Its totient is φ = 16399525680.

The previous prime is 61498330643. The next prime is 61498330657. The reversal of 61498330650 is 5603389416.

It is an interprime number because it is at equal distance from previous prime (61498330643) and next prime (61498330657).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61498330596 and 61498330605.

It is not an unprimeable number, because it can be changed into a prime (61498330657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 171850 + ... + 390549.

It is an arithmetic number, because the mean of its divisors is an integer number (1787026000).

Almost surely, 2^61498330650 is an apocalyptic number.

61498330650 is an abundant number, since it is smaller than the sum of its proper divisors (110056165350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61498330650 is an equidigital number, since it uses as much as digits as its factorization.

61498330650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562432 (or 562409 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 61498330650 in words is "sixty-one billion, four hundred ninety-eight million, three hundred thirty thousand, six hundred fifty".