148977471971 has 2 divisors, whose sum is σ = 148977471972. Its totient is φ = 148977471970.

The previous prime is 148977471949. The next prime is 148977471989. The reversal of 148977471971 is 179174779841.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 148977471971 - 2¹⁸ = 148977209827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 148977471898 and 148977471907.

It is not a weakly prime, because it can be changed into another prime (148977471911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74488735985 + 74488735986.

It is an arithmetic number, because the mean of its divisors is an integer number (74488735986).

Almost surely, 2^148977471971 is an apocalyptic number.

148977471971 is a deficient number, since it is larger than the sum of its proper divisors (1).

148977471971 is an equidigital number, since it uses as much as digits as its factorization.

148977471971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24893568, while the sum is 65.

The spelling of 148977471971 in words is "one hundred forty-eight billion, nine hundred seventy-seven million, four hundred seventy-one thousand, nine hundred seventy-one".