8861956557 has 8 divisors (see below), whose sum is σ = 12329678784. Its totient is φ = 5651102688.

The previous prime is 8861956541. The next prime is 8861956567. The reversal of 8861956557 is 7556591688.

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

It is not a de Polignac number, because 8861956557 - 2⁴ = 8861956541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8861956557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8861956567) 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, 64217008 + ... + 64217145.

It is an arithmetic number, because the mean of its divisors is an integer number (1541209848).

Almost surely, 2^8861956557 is an apocalyptic number.

It is an amenable number.

8861956557 is a deficient number, since it is larger than the sum of its proper divisors (3467722227).

8861956557 is a wasteful number, since it uses less digits than its factorization.

8861956557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128434179.

The product of its digits is 18144000, while the sum is 60.

The square root of 8861956557 is about 94137.9655452570. The cubic root of 8861956557 is about 2069.3940953429.

The spelling of 8861956557 in words is "eight billion, eight hundred sixty-one million, nine hundred fifty-six thousand, five hundred fifty-seven".