61228303951 has 2 divisors, whose sum is σ = 61228303952. Its totient is φ = 61228303950.

The previous prime is 61228303879. The next prime is 61228303991. The reversal of 61228303951 is 15930382216.

It is an a-pointer prime, because the next prime (61228303991) can be obtained adding 61228303951 to its sum of digits (40).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61228303951 - 2⁷ = 61228303823 is a prime.

It is a super-3 number, since 3×61228303951³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61228303991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30614151975 + 30614151976.

It is an arithmetic number, because the mean of its divisors is an integer number (30614151976).

Almost surely, 2^61228303951 is an apocalyptic number.

61228303951 is a deficient number, since it is larger than the sum of its proper divisors (1).

61228303951 is an equidigital number, since it uses as much as digits as its factorization.

61228303951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 61228303951 in words is "sixty-one billion, two hundred twenty-eight million, three hundred three thousand, nine hundred fifty-one".