61650033619 has 2 divisors, whose sum is σ = 61650033620. Its totient is φ = 61650033618.

The previous prime is 61650033559. The next prime is 61650033631. The reversal of 61650033619 is 91633005616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61650033619 - 2¹¹ = 61650031571 is a prime.

It is a super-2 number, since 2×61650033619² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61650033649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30825016809 + 30825016810.

It is an arithmetic number, because the mean of its divisors is an integer number (30825016810).

Almost surely, 2^61650033619 is an apocalyptic number.

61650033619 is a deficient number, since it is larger than the sum of its proper divisors (1).

61650033619 is an equidigital number, since it uses as much as digits as its factorization.

61650033619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87480, while the sum is 40.

The spelling of 61650033619 in words is "sixty-one billion, six hundred fifty million, thirty-three thousand, six hundred nineteen".