52457778619 has 2 divisors, whose sum is σ = 52457778620. Its totient is φ = 52457778618.

The previous prime is 52457778613. The next prime is 52457778641. The reversal of 52457778619 is 91687775425.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52457778619 - 2²³ = 52449390011 is a prime.

It is a super-2 number, since 2×52457778619² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (52457778613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26228889309 + 26228889310.

It is an arithmetic number, because the mean of its divisors is an integer number (26228889310).

Almost surely, 2^52457778619 is an apocalyptic number.

52457778619 is a deficient number, since it is larger than the sum of its proper divisors (1).

52457778619 is an equidigital number, since it uses as much as digits as its factorization.

52457778619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29635200, while the sum is 61.

The spelling of 52457778619 in words is "fifty-two billion, four hundred fifty-seven million, seven hundred seventy-eight thousand, six hundred nineteen".