9881156340 has 144 divisors (see below), whose sum is σ = 34418704320. Its totient is φ = 2269347840.

The previous prime is 9881156317. The next prime is 9881156357. The reversal of 9881156340 is 436511889.

9881156340 is a `hidden beast` number, since 9 + 8 + 8 + 1 + 1 + 5 + 634 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 93709 + ... + 168948.

It is an arithmetic number, because the mean of its divisors is an integer number (239018780).

Almost surely, 2^9881156340 is an apocalyptic number.

9881156340 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9881156340 is an abundant number, since it is smaller than the sum of its proper divisors (24537547980).

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

9881156340 is a wasteful number, since it uses less digits than its factorization.

9881156340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262702 (or 262697 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 9881156340 is about 99404.0056536959. The cubic root of 9881156340 is about 2145.8659584076.

The spelling of 9881156340 in words is "nine billion, eight hundred eighty-one million, one hundred fifty-six thousand, three hundred forty".