11861378862850 has 48 divisors (see below), whose sum is σ = 24131319916320. Its totient is φ = 4301848051200.

The previous prime is 11861378862847. The next prime is 11861378862869. The reversal of 11861378862850 is 5826887316811.

It is a super-2 number, since 2×11861378862850² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28242927 + ... + 28659826.

It is an arithmetic number, because the mean of its divisors is an integer number (502735831590).

Almost surely, 2^{11861378862850} is an apocalyptic number.

11861378862850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11861378862850 is an abundant number, since it is smaller than the sum of its proper divisors (12269941053470).

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

11861378862850 is a wasteful number, since it uses less digits than its factorization.

11861378862850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56903155 (or 56903150 counting only the distinct ones).

The product of its (nonzero) digits is 30965760, while the sum is 64.

The spelling of 11861378862850 in words is "eleven trillion, eight hundred sixty-one billion, three hundred seventy-eight million, eight hundred sixty-two thousand, eight hundred fifty".