47146947787 has 2 divisors, whose sum is σ = 47146947788. Its totient is φ = 47146947786.

The previous prime is 47146947769. The next prime is 47146947797. The reversal of 47146947787 is 78774964174.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47146947787 - 2¹⁵ = 47146915019 is a prime.

It is not a weakly prime, because it can be changed into another prime (47146947797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23573473893 + 23573473894.

It is an arithmetic number, because the mean of its divisors is an integer number (23573473894).

Almost surely, 2^47146947787 is an apocalyptic number.

47146947787 is a deficient number, since it is larger than the sum of its proper divisors (1).

47146947787 is an equidigital number, since it uses as much as digits as its factorization.

47146947787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 66382848, while the sum is 64.

The spelling of 47146947787 in words is "forty-seven billion, one hundred forty-six million, nine hundred forty-seven thousand, seven hundred eighty-seven".