947144038989551 has 8 divisors (see below), whose sum is σ = 1026756248076384. Its totient is φ = 868496826376800.

The previous prime is 947144038989541. The next prime is 947144038989559. The reversal of 947144038989551 is 155989830441749.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-947144038989551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947144038989559) 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, 241249116476 + ... + 241249120401.

It is an arithmetic number, because the mean of its divisors is an integer number (128344531009548).

Almost surely, 2^{947144038989551} is an apocalyptic number.

947144038989551 is a deficient number, since it is larger than the sum of its proper divisors (79612209086833).

947144038989551 is a wasteful number, since it uses less digits than its factorization.

947144038989551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482498237041.

The product of its (nonzero) digits is 1567641600, while the sum is 77.

The spelling of 947144038989551 in words is "nine hundred forty-seven trillion, one hundred forty-four billion, thirty-eight million, nine hundred eighty-nine thousand, five hundred fifty-one".