61277672266511 has 2 divisors, whose sum is σ = 61277672266512. Its totient is φ = 61277672266510.

The previous prime is 61277672266507. The next prime is 61277672266567. The reversal of 61277672266511 is 11566227677216.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61277672266511 - 2² = 61277672266507 is a prime.

It is a super-2 number, since 2×61277672266511² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61277672266211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30638836133255 + 30638836133256.

It is an arithmetic number, because the mean of its divisors is an integer number (30638836133256).

Almost surely, 2^{61277672266511} is an apocalyptic number.

61277672266511 is a deficient number, since it is larger than the sum of its proper divisors (1).

61277672266511 is an equidigital number, since it uses as much as digits as its factorization.

61277672266511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17781120, while the sum is 59.

The spelling of 61277672266511 in words is "sixty-one trillion, two hundred seventy-seven billion, six hundred seventy-two million, two hundred sixty-six thousand, five hundred eleven".