9945487948731 has 8 divisors (see below), whose sum is σ = 13263026655504. Its totient is φ = 6629137270560.

The previous prime is 9945487948727. The next prime is 9945487948789. The reversal of 9945487948731 is 1378497845499.

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

It is not a de Polignac number, because 9945487948731 - 2² = 9945487948727 is a prime.

It is a super-2 number, since 2×9945487948731² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9945487943731) 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, 296987616 + ... + 297021101.

It is an arithmetic number, because the mean of its divisors is an integer number (1657878331938).

Almost surely, 2^{9945487948731} is an apocalyptic number.

9945487948731 is a deficient number, since it is larger than the sum of its proper divisors (3317538706773).

9945487948731 is a wasteful number, since it uses less digits than its factorization.

9945487948731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594014301.

The product of its digits is 2194698240, while the sum is 78.

The spelling of 9945487948731 in words is "nine trillion, nine hundred forty-five billion, four hundred eighty-seven million, nine hundred forty-eight thousand, seven hundred thirty-one".