1391661350252 has 6 divisors (see below), whose sum is σ = 2435407362948. Its totient is φ = 695830675124.

The previous prime is 1391661350231. The next prime is 1391661350257. The reversal of 1391661350252 is 2520531661931.

It is not an unprimeable number, because it can be changed into a prime (1391661350257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173957668778 + ... + 173957668785.

It is an arithmetic number, because the mean of its divisors is an integer number (405901227158).

Almost surely, 2^{1391661350252} is an apocalyptic number.

It is an amenable number.

1391661350252 is a deficient number, since it is larger than the sum of its proper divisors (1043746012696).

1391661350252 is a wasteful number, since it uses less digits than its factorization.

1391661350252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347915337567 (or 347915337565 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 44.

The spelling of 1391661350252 in words is "one trillion, three hundred ninety-one billion, six hundred sixty-one million, three hundred fifty thousand, two hundred fifty-two".