947712129902 has 16 divisors (see below), whose sum is σ = 1430270604672. Its totient is φ = 470961441720.

The previous prime is 947712129829. The next prime is 947712129907. The reversal of 947712129902 is 209921217749.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947712129907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1237748 + ... + 1851335.

It is an arithmetic number, because the mean of its divisors is an integer number (89391912792).

Almost surely, 2^947712129902 is an apocalyptic number.

947712129902 is a deficient number, since it is larger than the sum of its proper divisors (482558474770).

947712129902 is a wasteful number, since it uses less digits than its factorization.

947712129902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3090023.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The spelling of 947712129902 in words is "nine hundred forty-seven billion, seven hundred twelve million, one hundred twenty-nine thousand, nine hundred two".