102747172051 has 2 divisors, whose sum is σ = 102747172052. Its totient is φ = 102747172050.

The previous prime is 102747172037. The next prime is 102747172091. The reversal of 102747172051 is 150271747201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102747172051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102747172051.

It is not a weakly prime, because it can be changed into another prime (102747172001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51373586025 + 51373586026.

It is an arithmetic number, because the mean of its divisors is an integer number (51373586026).

Almost surely, 2^102747172051 is an apocalyptic number.

102747172051 is a deficient number, since it is larger than the sum of its proper divisors (1).

102747172051 is an equidigital number, since it uses as much as digits as its factorization.

102747172051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27440, while the sum is 37.

The spelling of 102747172051 in words is "one hundred two billion, seven hundred forty-seven million, one hundred seventy-two thousand, fifty-one".