101918149815047 has 2 divisors, whose sum is σ = 101918149815048. Its totient is φ = 101918149815046.

The previous prime is 101918149814951. The next prime is 101918149815103. The reversal of 101918149815047 is 740518941819101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101918149815047 - 2²⁸ = 101917881379591 is a prime.

It is a super-2 number, since 2×101918149815047² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101918149815247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50959074907523 + 50959074907524.

It is an arithmetic number, because the mean of its divisors is an integer number (50959074907524).

Almost surely, 2^{101918149815047} is an apocalyptic number.

101918149815047 is a deficient number, since it is larger than the sum of its proper divisors (1).

101918149815047 is an equidigital number, since it uses as much as digits as its factorization.

101918149815047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 59.

The spelling of 101918149815047 in words is "one hundred one trillion, nine hundred eighteen billion, one hundred forty-nine million, eight hundred fifteen thousand, forty-seven".