1161951266660 has 24 divisors (see below), whose sum is σ = 2452483950840. Its totient is φ = 462421213184.

The previous prime is 1161951266629. The next prime is 1161951266741. The reversal of 1161951266660 is 666621591611.

It can be written as a sum of positive squares in 4 ways, for example, as 119167182436 + 1042784084224 = 345206^2 + 1021168^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1161951266599 and 1161951266608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147451805 + ... + 147459684.

It is an arithmetic number, because the mean of its divisors is an integer number (102186831285).

Almost surely, 2^{1161951266660} is an apocalyptic number.

1161951266660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1161951266660 is an abundant number, since it is smaller than the sum of its proper divisors (1290532684180).

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

1161951266660 is a wasteful number, since it uses less digits than its factorization.

1161951266660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294911695 (or 294911693 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 1161951266660 in words is "one trillion, one hundred sixty-one billion, nine hundred fifty-one million, two hundred sixty-six thousand, six hundred sixty".