47398641690 has 64 divisors (see below), whose sum is σ = 116915736960. Its totient is φ = 12289132800.

The previous prime is 47398641683. The next prime is 47398641739. The reversal of 47398641690 is 9614689374.

It is a super-2 number, since 2×47398641690² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 47398641690.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1595896 + ... + 1625324.

It is an arithmetic number, because the mean of its divisors is an integer number (1826808390).

Almost surely, 2^47398641690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47398641690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58457868480).

47398641690 is an abundant number, since it is smaller than the sum of its proper divisors (69517095270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47398641690 is a wasteful number, since it uses less digits than its factorization.

47398641690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30927.

The product of its (nonzero) digits is 7838208, while the sum is 57.

The spelling of 47398641690 in words is "forty-seven billion, three hundred ninety-eight million, six hundred forty-one thousand, six hundred ninety".