266615630620051 has 2 divisors, whose sum is σ = 266615630620052. Its totient is φ = 266615630620050.

The previous prime is 266615630620007. The next prime is 266615630620063. The reversal of 266615630620051 is 150026036516662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 266615630620051 - 2⁴⁷ = 125878142264723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 266615630619977 and 266615630620004.

It is not a weakly prime, because it can be changed into another prime (266615630620151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133307815310025 + 133307815310026.

It is an arithmetic number, because the mean of its divisors is an integer number (133307815310026).

Almost surely, 2^{266615630620051} is an apocalyptic number.

266615630620051 is a deficient number, since it is larger than the sum of its proper divisors (1).

266615630620051 is an equidigital number, since it uses as much as digits as its factorization.

266615630620051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 266615630620051 in words is "two hundred sixty-six trillion, six hundred fifteen billion, six hundred thirty million, six hundred twenty thousand, fifty-one".