42762781651 has 2 divisors, whose sum is σ = 42762781652. Its totient is φ = 42762781650.

The previous prime is 42762781637. The next prime is 42762781669. The reversal of 42762781651 is 15618726724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42762781651 - 2²³ = 42754393043 is a prime.

It is a super-2 number, since 2×42762781651² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42762781595 and 42762781604.

It is not a weakly prime, because it can be changed into another prime (42762781601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21381390825 + 21381390826.

It is an arithmetic number, because the mean of its divisors is an integer number (21381390826).

Almost surely, 2^42762781651 is an apocalyptic number.

42762781651 is a deficient number, since it is larger than the sum of its proper divisors (1).

42762781651 is an equidigital number, since it uses as much as digits as its factorization.

42762781651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 49.

The spelling of 42762781651 in words is "forty-two billion, seven hundred sixty-two million, seven hundred eighty-one thousand, six hundred fifty-one".