47398641691 has 4 divisors (see below), whose sum is σ = 47400259384. Its totient is φ = 47397024000.

The previous prime is 47398641683. The next prime is 47398641739. The reversal of 47398641691 is 19614689374.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47398641691 - 2³ = 47398641683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47398641611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764070 + ... + 823771.

It is an arithmetic number, because the mean of its divisors is an integer number (11850064846).

Almost surely, 2^47398641691 is an apocalyptic number.

47398641691 is a deficient number, since it is larger than the sum of its proper divisors (1617693).

47398641691 is a wasteful number, since it uses less digits than its factorization.

47398641691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617692.

The product of its digits is 7838208, while the sum is 58.

The spelling of 47398641691 in words is "forty-seven billion, three hundred ninety-eight million, six hundred forty-one thousand, six hundred ninety-one".