8961079505501 has 16 divisors (see below), whose sum is σ = 9815650113600. Its totient is φ = 8142907976448.

The previous prime is 8961079505489. The next prime is 8961079505537. The reversal of 8961079505501 is 1055059701698.

It is a cyclic number.

It is not a de Polignac number, because 8961079505501 - 2⁴² = 4563032994397 is a prime.

It is a super-2 number, since 2×8961079505501² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8961079505551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19322726 + ... + 19781048.

It is an arithmetic number, because the mean of its divisors is an integer number (613478132100).

Almost surely, 2^{8961079505501} is an apocalyptic number.

It is an amenable number.

8961079505501 is a deficient number, since it is larger than the sum of its proper divisors (854570608099).

8961079505501 is a wasteful number, since it uses less digits than its factorization.

8961079505501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498028.

The product of its (nonzero) digits is 3402000, while the sum is 56.

The spelling of 8961079505501 in words is "eight trillion, nine hundred sixty-one billion, seventy-nine million, five hundred five thousand, five hundred one".